Investigators have found explosives residue in the apartment that bombing suspect Tamerlan Tsarnaev shared with his wife and young daughter, a source briefed on the investigation said Friday.
The residue turned up in at least three places at the apartment in Cambridge, Massachusetts, the source said: the kitchen table, the kitchen sink and the bathtub.
Tamerlan’s younger brother, Dzhokhar, told investigators that he and his brother built the devices in Tamerlan’s home;
He also said the brothers originally planned a suicide attack on the city’s massive Independence Day celebration, which draws about 500,000 people and is televised nationally on CBS.
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