Police have broken up 181 terrorist groups over the past year as the result of a sweeping crackdown in the Xinjiang Uygur autonomous region, local authorities said on Monday.

According to the regional government's publicity office, 96.2 percent of the groups were traced before they were able to commit crimes and 112 suspects surrendered to the police.

The anti-terrorism campaign was launched a day after the bombing of a market in the regional capital of Urumqi that killed 39 people in May last year.