Evidence photos from Boston bombings

A police forensics team examines a boat in a yard on April 22, 2013, on Franklin Street in Watertown, Massachusetts, where bombing suspect Dzhokhar Tsarnaev was discovered.

A police forensics team examines a boat in a yard on April 22, 2013, on Franklin Street in Watertown, Massachusetts, where bombing suspect Dzhokhar Tsarnaev was discovered.