URUMQI, China (AP) — Chinese authorities launched a yearlong anti-terrorism crackdown Saturday in China’s Muslim northwest after a bombing in the region killed at least 43 people, while also announcing the first arrest in the attack.

Police announced names of five people blamed for Thursday’s attack in a vegetable market in the city of Urumqi, and accused them of forming a “terrorist gang” at the end of 2013, the official Xinhua News Agency said. Four of the suspects were killed and the fifth was captured Thursday night in an area about 250 kilometers (150 miles) south of Urumqi, Xinhua said.