BEIJING, May 22 -- China said it has the confidence and capability to crack down on terrorists after the latest terrorist attack in northwest China killed 31 people and injured 94 others Thursday morning.

Two vehicles without license plates broke through roadside fences and plowed into people at an open air market in Urumqi at 7:50 a.m., and explosive devices were set off, said a statement issued by the Xinjiang Uygur Autonomous Region's publicity department.

Medical resources are being mobilized to save the injured, Foreign Ministry spokesman Hong Lei said at a regular news briefing.

"The violence, a further indication of the terrorists' anti-human , anti-society and anti-civilization nature, should be condemned by the Chinese people and the international community," Hong said.

In response to the attack, Chinese President Xi Jinping pledged to severely punish terrorists and spare no efforts in maintaining stability, asking local authorities to solve the case quickly, put the injured under proper care and offer condolences to families of the victims.

The Chinese government will continue to work hard in fighting terrorism and try its best to safeguard social stability, Xi said.

"The Chinese government has the confidence and capability to crack down on the audacious terrorists, who will never achieve their purposes," Hong said.