All nine people trapped underneath were found dead after a warehouse partially collapsed in Harbin, capital of northeast China's Heilongjiang Province, on Tuesday.

The collapse happened at 8:55 a.m. in a warehouse of a food company in the city's Daoli District, leaving nine people trapped under the rubble.

A team of over 350 rescuers had found the nine trapped by 4:50 a.m. on Wednesday and detected no vital signs on them all.

No secondary disaster occurred after the collapse.  

The identities of the dead are now being verified and some relevant persons have been detained by police.

The municipal government said it has launched an investigation into the cause of the collapse.