dilg two serendra presentation june 7 2013

7/28/2019 DILG Two Serendra Presentation June 7 2013

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Department of the Interiorand Local Government

TWO SERENDRAINVESTIGATION

Kaligtasan, Katiyakan


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On May 31, 2013, at approximately 7:59 PM, an explosion

took place in Unit 501-B, Two Serendra Condominiums,

located in Fort Bonifacio, Taguig.


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The following presents the initial findings of

the Inter-agency Task Force investigating theincident

NCRPOORD

RIDBomb Squad

Southern Police DistrictTaguig City police

DSRUEODK9

District Investigation Division

National Bureau of Investigation

Philippine Army

CIDG-NCR

Department of Science andTechnology

Department of EnergyDepartment of Health

Department of Public Worksand Highways

Bureau of Fire ProtectionIATF

Taguig Fire MarshallDistrict Office

BFP HQ

Taguig City LGUTaguig Rescue

Crime Laboratory

SOCO


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A. WAS IT A BOMB OR NOT?


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INVESTIGATIONS AND

FINDINGSI. K9 Unit Walkthrough

II. Walkthrough by SOCO, SPD-EOD,

NCRPO-EOD and Taguig CPS-EOD

III. SOCO Swabs

IV. NBI Post Blast Investigation

V. Bureau of Fire Protection Post Fire

Investigation


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I. K9 Unit Walkthrough

At 8:30 PM, SRU/Bomb Squad, SPD with two bomb-sniffingdogs under PCINSP Ariel Bait arrived at the scene.

At 9:00 PM, NCRPO K9 unit with three bomb sniffing dogs

under PSI Leonie Ann Apaling, and their handlers arrived at

the scene.

At 9:15 PM, Philippine Army K9 unit, with four bomb sniffing

dogs and their handlers arrived at the scene.

At 10:30 PM, wide area panelling concluded.


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1 K9 - Southern Police District

1 K9 - National Capital Region Police Office


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4 Philippine Army k9 Unit



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4 Philippine Army K9 Unit



3 K9 - National Capital Region

Police Office


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RESULTS OF WALKTHROUGH WITH

K9 UNIT

All nine K9 bomb-sniffing dogs from the different

kennels did NOT manifest the presence of anyexplosive materials or residue.


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II. Walkthrough by SOCO, SPD-EOD,

NCRPO-EOD and Taguig CPS-EOD

No sightings of bomb components (e.g. shrapnel,

blasting caps, timers, etc.).


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III. SOCO Swabs

Took 61 swabs inside Unit 501-B and 76 swabs fromthe 3 concrete slabs that were thrown off the unit.

Note: Swabs were tested using Gas ChromatographyMass Spectrophotometer which can detect RDX,

PETN, TNT, TATP and other organic explosives.

All swabs yielded NEGATIVE results for presence

of bomb residue.


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IV. BFP Post-fire Investigation

In their post-fire investigation (walk-through andsifting through debris and rubble in all areas within

the yellow-taped crime scene), the BFPs findings

indicate that despite the presence of fire, charring andsingeing, neither bomb components nor a crater was

found or detected.


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V. NBI-EOD Post Blast Investigation

In their post-blast investigation (walkthrough and siftingthrough debris and rubble in all areas within the yellow-taped

crime scene), no seat of explosion or crater nor bomb

components (power supply, switch, containers, wires,detonators) were found onsite.

Note: Craters are indicative of explosions caused by bombs.


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Therefore, in view of the foregoing, theexplosion was NOT caused by a bomb,whether improvised or manufactured.


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B.PERSONS INVOLVED


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As of June 6, 2013, RID and CIDG Investigators

interviewed 60 people and took 53 sworn statements.

Occupants/Tenants Security Personnel-Ayala, Taguig City Police

First Responders-Taguig Fire Rescue, AmbulancePersonnel

Renovation workers Meter readers Blast witnesses/motorists outside Two Serendra


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Angelito San Juan

age: 63 years old holder of US Alien Resident Card based in the US (on and off for the last 40

years) no known criminal history in the US


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He is currently in the ICU of St. Lukes Hospital,

Taguig.

Per Dr. Dela Pena, General Surgeon of St. Lukes: He is suffering from 2nd degree burns covering

72% of total body surface.

He is conscious, but under sedation and intubated.

We have police eyewitness testimony and a videofrom his brother showing that Mr. San Juan is

currently unable to communicate.


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Marianne Cayton-Castillo

the owner of Unit 501-B, Two Serendra based in the U.S. initial reports stated that George Cayton, her

father, was the owner of the unit.

Note: Marianne Cayton-Castillo, through her aunt Herminia Ochoa,

agreed to allow Herminias friend Angelito San Juan to stay in the

unit.


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Herminia Espana Ochoa

age: 63 years old resident of Pasig City aunt of Marianne Cayton Castillo

batchmate of Angelito San Juan who asked herniece Marianne if Angelito can stay in the unit. designated caretaker of the unit


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TIMELINE OF ANGELITO SAN JUANSMOVEMENTS

Note: Based on the sworn statement of Herminia Ochoa. The

interview was conducted by SP01 Razel V. Gaspar in St. Lukes

Hospital, Taguig City, at 10:55 AM on June 2, 2013, in front of

PO1 Amado Biete and SPO1 Alberto Sombilon.


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5:55 AM: Angelito San Juan arrives from the US atTerminal 2, NAIA. Ms. Herminia Ochoa and he,

together with other companions, proceed to

McDonalds, Bonifacio Global City.

6:55 AM: Mr. San Juan arrives at Two Serendra withMs. Herminia Ochoa.

Discovering that the unit did not have water,

food and other basic necessities, Mr. San Juan

departs Two Serendra with Ms. Ochoa, andproceeds to the latters residence in Pasig City.

MAY 31, 2013:


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MAY 31, 2013:

1:27 PM: Mr. San Juan returns to Two Serendra.

2:00 PM: Mr. San Juan sent a text message to Ms. Ochoa,saying, There is no power here. He verbally informed

her that only the electric fan is functioning in the unit

(the building scheduled a limited power period from

8 AM to 6 PM for maintenance).

6:49 PM: Ms. Ochoa texted Mr. San Juan, Leaving house

na ako see you in the lobby within 15 minutes toremind him of their dinner reservations. He did not

reply to her texts, even when she sent a message saying

that she was in the front lobby.


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MAY 31, 2013:

7:49 PM: Ms. Ochoa is accompanied by two security guardsof Two Serendra to Unit 501-B. Mr. San Juan answered, and

opened the door. He said that he would just put his shoes

and polo shirt on. Ms. Ochoa said that she would wait for

him in the car.

Ms. Ochoa and the two security guards descend to theground floor; Ms. Ochoa went to her vehicle to wait for Mr.

San Juan, while the security guards returned to their

assigned duties.

7:59 PM: Explosion takes place while Ms. Ochoa is in the car.


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In view of the foregoing, given the information

presently at hand, it appears that the behavior

of Mr. San Juan and related parties (Ochoa,Cayton-Castillo) were normal.


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C. IF ITS NOT A BOMB,

WHAT WAS IT?


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THE LAYOUT


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Mc Kinley Parkway


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1"

2"

3"

5"

6"

7"

8"

501" 503" 505" 506"

306"

PIPING SYSTEM OF LPG OF TOWER B


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l k


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McKinley)Parkway)

Location of LPG meterassembly cabinets


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max$0.4$psi$

0.4!psi!

7.0$psi$Downline!Pipe:!

1$in$$

Riser:!1$$in$$

Pipe!to!Unit:!

$in$$

TYPICAL$GAS$METER$ASSEMBLY$

Lever$

Arm$


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3D model of the Building B, 5th floor


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Unit 501-B before renovation


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Unit 501-B after renovation


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THE BLAST


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McKinley)Parkway)

501B%


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Unit 501-B after the blast explosion


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ANALYSIS OF THE BLAST


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Explosions of this magnitude can be caused by a number of factors,

e.g., lightning, gasoline and other liquid hydrocarbon explosions and

combustion or reaction (spontaneous or intentional) of chemical

substances (gases).

There was no reported lightning at the time.

Liquid hydrocarbons (gasoline, diesel, kerosene) would require acontainer, and given the magnitude of the explosion, it would

have to be a large container. There were no indications of such a

container at the site.

Given the foregoing, the explosion is most likely to have been causedby combustion or reaction of chemical substances (gases).


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There are more than a hundred known chemical substances(gases) that could explode or are flammable. Examples of these

are argon, carbon dioxide, helium, hydrogen, acetylene, methane,

and others.

However, all these are not commonly found in abundantquantities in residences or condominiums. In the case of Two

Serendra, they would have had to be brought in. Moreover, all of

the foregoing, which are commonly stored under high pressure,

are contained in steel cylinder tanks. The walkthroughs by the

investigating agencies did not reveal any such cylinder tanks.


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Given the dimensions of Unit 501 (7.55m x 6.90m x 2.20 m) the

following values were calculated

The weight of the concrete slab that was dislodged during the explosion is

given as 3,700kg. Assuming the bolt reinforcement of the slab to the columns

is rated at 10,000kg, the Force and Energy needed to push the block

horizontally by 25m is:

W=F

d=134,260N25m

=3,356 kJ

! Percent!(%)! Volume!of!

propane!gas!(L)!

Energy!(kJ)!

LEL! 2.00$ 2,292.18$ 203,000$

UEL! 10.00$ 11,460.90$ 1,040,000$

$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $


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Date% Loca)on% Remarks%

September%9,%2010% San$Bruno,$California$ House.$4$people$dead,$

53$homes$burned$down,$

120$homes$damaged$

June%17,%2011% Turkey$ 1$dead,$Petrol$StaDon$

compound$

November%10,%2012% Richmond$Hill,$

Indianapolis$

House.$IntenDonal$leak$

and$explosion.$2$dead,$

20$injured$

November%23,%2012% Springfield,$

MassachuseLs$

Building.$42$other$

buildings$were$damaged$

April%29,%2013% Prague,$Czech$Republic$ Townhouse$

May%29,%2013% Tinsley,$Sheffield,$UK$ House$

June%4,%2013% New$York$City$ Nyack$College.$7$injured.$

amaged$steel$pipe.$

RECENT%GAS%EXPLOSION%INCIDENTS%

$


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For Two Serendra, the gas that is most readily

available and does not require a specialized

container is LPG. Two Serendra uses a centralizedpipe-in LPG system.


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In view of all of the foregoing, the blast was

consistent with a gas explosion, most likely LPG.

We are continuing our investigations as to thetimeline and sequence of events and will give

updates accordingly.


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THANK YOU.


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Two Serendra Inter-agency Task Force

NCRPOORDRID

Bomb Squad

Southern Police DistrictTaguig City police

DSRUEODK9

District Investigation Division

National Bureau of Investigation

Philippine Army

CIDG-NCR

Department of Science andTechnology

Department of EnergyDepartment of Health

Department of Public Worksand Highways

Bureau of Fire ProtectionIATF

Taguig Fire MarshallDistrict Office

BFP HQ

Taguig City LGUTaguig Rescue

Crime Laboratory

SOCO

dilg two serendra presentation june 7 2013

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