Unidentified gunmen opened fire inside a public market in a southern Philippine town, killing one man and injuring five people, dpa quoted police sources as saying Sunday. The shooting incident occurred on Saturday noon in the public market of Bongao town in Tawi-Tawi island province, 1,100 kilometres south of Manila. Provincial police chief Senior Superintendent Winright Taup said the lone fatality was apparently the target of the attack. "It could have been a personal grudge," he said.