BEIJING - Shanghai Cooperation Organization (SCO) Secretary-General Dmitry Mezentsev on Thursday condemned the deadly terrorist attack in northwest China's Urumqi City, expressing the SCO's strong indignation and deep sorrow.

"We express deep-felt condolence to the victims and convey sincere solace to relatives of the victims and the injured people, " Mezentsev said in a statement.

It is the priority of the SCO to fight terrorism, the statement said, adding the international community should further boost cooperation to combat terrorist activities effectively.

Two vehicles, without license plates, broke through roadside fences and plowed into people at an open air market in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, on Thursday morning. Explosive devices were set off, causing the deaths of at least 31 people and injuring 94 others.