A Toyota Kijang , bought on 20 July 2003 , from an Indonesian businessman for 25.75 million rupiah was loaded with explosives and driven through the taxi stand in front of the Marriott Hotel . The vehicle stopped briefly in front of the lobby and CCTV cameras show a security guard approaching the vehicle , briefly speaking to the driver . The security guard then turns and a detonation can be seen . It is still not clear if the explosion was accidental , set off by remote detonation or a timer exploding prematurely . If the vehicle had kept a course heading straight for the lobby the damage would undoubtedly have been more severe . The blast radius was visible along with the shattered windows of nearby buildings . According to Indonesian police , one of the ingredients in the car bomb contained the same chemical used in the deadly 2002 Bali bombings . The bombs in both cases were made of the same mixture of explosives , mobile phones were used as detonators , and the attackers had tried to scrape off the identification numbers from the vehicle bombs
2002 Bali bombings
2002 Bali bombings
2003 Marriott Hotel bombing