A homemade bomb ripped through a commuter bus in the southern Philippines on Thursday, wounding 27 people, police said. According to AP, the military initially reported three people were killed, but police and army officials later corrected themselves and said there were no deaths. The bus had stopped at a Digos city terminal on the way to the regional center of Davao. Moments after the driver returned and started the engine, the blast shattered the windows and some of the seats, said provincial police Chief Cesario Darantinao. Police recovered broken nails used as shrapnel, he said. The owner of the bus company, who is also the mayor of a nearby town, had complained of extortion demands purportedly from communist rebels, Darantinao said. Among the 27 injured, four were in serious condition, Darantinao said.