Jerusalem bus blast caused by bomb - mayor's spokeswoman

(Reuters) - A blast aboard a Jerusalem bus that wounded 16 people on Monday was caused by a bomb, a spokeswoman for the Israeli mayor, Nir Barkat, said. "It was small, but it was definitely a bomb," Brachie Sprung told Reuters. (Reporting By Mustafa Abu Ganeyeh; editing by John Stonestreet)