Bombs Were Placed In What?

Via ESPN:

The details on the apparently crude but deadly explosives emerged as investigators appealed to the public for amateur video and photos that might yield clues, and the chief FBI agent in Boston vowed “we will go to the ends of the Earth” to find those responsible. A person who spoke to AP on the condition of anonymity because the investigation was still going on said that the explosives were put in 6-liter pressure cookers, placed in black duffel bags and left on the ground. They were packed with shrapnel, the person said. The person said law enforcement officials have some of the bomb components but do not yet know what was used to set off the explosives. Earlier, a doctor treating the wounded appeared to corroborate the person’s account, saying one of the victims was maimed by what looked like ball bearings or BBs. “We’ve removed BBs and we’ve removed nails from kids. One of the sickest things for me was just to see nails sticking out of a little girl’s body,” said Dr. David Mooney, director of the trauma center at Boston Children’s Hospital. Two children remain in critical condition at the hospital with serious leg injuries. Mooney said that tourniquets applied by emergency responders at the race saved the children’s lives. The story continues here