The death toll from the deadly coal mine blast in northeast China's Heilongjiang Province has risen to 104, said local authorities early Monday morning.

Another four are still trapped in the shaft.

The blast happened at around 2:30 a.m. Saturday at the Xinxing Coal Mine under the state-owned Heilongjiang Longmei Mining Holding Group's subsidiary in Hegang City. A total of 528 miners were working underground when the blast happened.