Sources: Dzhokhar Tsarnaev Left Note in Boat He Was Captured In

Allegedly claimed responsibility for Boston bombing

Boston bombing suspect Dzhokhar Tsarnaev left a note claiming responsibility for the April 13 attack, reports CBS News senior correspondent John Miller.

Sources tell Miller that Tsarnaev wrote the note in the boat he was hiding in as police pursued him, and as he bled from gunshot wounds sustained in an earlier shootout between police and his older brother, Tamerlan Tsarnaev.