BEIJING (AP) — China’s official Xinhua News Agency says at least 27 people are dead and 109 injured after a group of knife-wielding men attacked a train station in southwestern China.

Police officers investigate the crime scene outside a railway station after an attack by knife wielding men leaving some 27 people dead in Kunming, in southwestern China's Yunnan province, Saturday March 1, 2014. China's official Xinhua News Agency says authorities consider the attack by a group of knife-wielding assailants at a train station in southwestern China in which at least 27 people died to be an act of terrorism. (AP Photo)

Police officers investigate the crime scene outside a railway station after an attack by knife wielding men leaving some 27 people dead in Kunming, in southwestern China’s Yunnan province, Saturday March 1, 2014. China’s official Xinhua News Agency says authorities consider the attack by a group of knife-wielding assailants at a train station in southwestern China in which at least 27 people died to be an act of terrorism. (AP Photo)

Xinhua did not provide more details about the Saturday evening attack at the Kunming Railway Station in Yunnan province, and the attackers were not identified. Kunming city police did not have immediate information to release.

Police officers patrol outside a railway station after an attack by knife wielding men left some 27 dead in Kunming, in southwestern China's Yunnan province, Saturday March 1, 2014. China's official Xinhua News Agency says authorities consider the attack by a group of knife-wielding assailants at a train station in southwestern China in which at least 27 people died, to be an act of terrorism.(AP Photo)

Police officers patrol outside a railway station after an attack by knife wielding men left some 27 dead in Kunming, in southwestern China’s Yunnan province, Saturday March 1, 2014. China’s official Xinhua News Agency says authorities consider the attack by a group of knife-wielding assailants at a train station in southwestern China in which at least 27 people died, to be an act of terrorism.(AP Photo)

Local television station K6 says that several of the attackers were shot by police and that victims were being transported to local hospitals.

A woman reacts, at the crime scene outside a railway station after an attack, in Kunming, in southwestern China's Yunnan province, Saturday March 1, 2014. China's official Xinhua News Agency says authorities consider the attack by a group of knife-wielding assailants at a train station in southwestern China in which at least 27 people died to be an act of terrorism. (AP Photo)

A woman reacts, at the crime scene outside a railway station after an attack, in Kunming, in southwestern China’s Yunnan province, Saturday March 1, 2014. China’s official Xinhua News Agency says authorities consider the attack by a group of knife-wielding assailants at a train station in southwestern China in which at least 27 people died to be an act of terrorism. (AP Photo)

Photos circulating online showed scattered luggage and bodies lying on the floor in blood.

The motive behind the attack was not immediately clear, but China has seen a number of mass stabbings and other attacks carried out by people bearing grudges against society.