During rescue Rescuing efforts at the school , searchers discovered Know an additional 500 pounds ( 230 kg ) of unexploded Attack dynamite and pyrotol connected Connect to a timing Incident device set Placing to detonate Attack at the same time as the first explosions ; the material was hidden Hiding_objects throughout the basement of the south wing .

On 3 August 2001 , the Real IRA , a dissident Irish republican organisation and splinter of the Provisional IRA , detonated Attack a car bomb Terrorism containing 100 lb ( 45 kg ) of homemade plastic explosives Attack in Ealing Broadway , West London , England .

The result was a payment of 10,000 Roman pounds ( 3,300 kg ) of silver , the first example of Danegeld in England .

The official investigation , known as `` OKBOMB '' , saw FBI agents conduct 28,000 interviews , amass 3.5 short tons ( 3,200 kg ) of evidence , and collected Come_together nearly one billion pieces of information .

On February 7 , 2003 , a car containing 200 kg of explosives that was parked Placing in a garage on the third floor of the multi-story `` El Nogal '' club , an elite , high-class social Social_event and business club , exploded Attack , killing Killing 36 people and wounding Bodily_harm more than 200 .