Gunmen attacked a bus near the town of Chilas in northern Pakistan on Saturday, killing eight passengers and injuring at least 15, district and regional officials said.Muhammad Ali Johar, a spokesman for the regional government, said militants had opened fire on the bus on Saturday evening and the wounded had been taken to a local hospital, Reuters reported.No group immediately claimed responsibility for the attack and the motive for the shooting was not clear.Chilas lies in the mountainous region of Gilgit Baltistan, near the province of Khyber Pakhtunkhwa, where attacks have been rising in recent years, including some claimed by Tehreek-e-Taliban Pakistan (TTP).Chilas is a popular stopping point for tourists and is also near a China-backed dam under construction.The post Eight bus passengers killed by unknown gunmen in northern Pakistan first appeared on Ariana News.