Publications
Partners
Boston - The bombs that tore through the crowd at the Boston Marathon in a deadly 2013 attack were sparked by a remote control from a toy car and powered by flash powder from fireworks, FBI experts said on Thursday as prosecutors approach the end of presenting their case.
Federal Bureau of Investigation chemistry specialist David McCollam testified in the 14th day of Dzhokhar Tsarnaev's trial on charges of killing three people and injuring 264 people with a pair of homemade pressure-cooker bombs at the race's finish line on 15 April 2013.
The bombs used in the attack, as well as others thrown at police during a gunfight in the suburb of Watertown, Massachusetts, after Tsarnaev and his older brother, Tamerlan, allegedly killed a university police officer, had the distinctive signs of low-powered explosives, said McCollam.
