BEIJING (AP) — So far this month, police in China’s restive western region of Xinjiang have broken up 23 terror and religious extremism groups and caught over 200 suspects, state media reported Monday.

It was the first announcement of a large number of arrests since an attack last week in the region’s capital killed at least 34 that police have blamed on a “terrorist gang.” Authorities subsequently launched a high-profile one-year security crackdown targeting terrorists and extremists, although the figures for the latest detentions are for the whole month of May.