At least four people were found dead after a warehouse partially collapsed Tuesday in Harbin, northeast China's Heilongjiang Province, according to China News. The collapse happened at 8:55 a.m. in a warehouse of a food company, leaving nine people trapped under the rubble. The identities of the dead are now being verified and relevant persons of the warehouse have been detained by police. Some 350 rescuers are still searching for those missing. The cause of the incident was not immediately clear.