BEIJING (AP) — Authorities say they have broken up 32 terror groups and arrested more than 380 suspects in China’s west in the first month of a crackdown aimed at demonstrating the Communist Party’s resolve to maintain order in a borderland by recent unrest.

Officials from the Xinjiang region told reporters Monday that security forces also seized several hundred explosive devices, a few tons of explosive material and computers and books about terrorism and religious extremism.

The crackdown follows a string of high-profile attacks on civilians since late October that have handed party leader Xi Jinping a major security challenge during his first year and a half in office.

Last month, a market bombing killed 43 people in Xinjiang’s capital, Urumqi.