Update: A Fox affiliate reporter on the scene says he’s heard no less than eight explosions. Word on Twitter is that those are flashbangs being tossed in to scare him out of the boat.
Boston Mayor Tom Menino confirmed to WBZ-TV that police had surrounded the bombing suspect inside a boat in the backyard of a home on Franklin Street. Sources say that a resident called police to report finding blood by the boat.
WBZ NewsRadio 1030 reported that authorities were able to confirm there was a person inside by using a thermal camera from a helicopter