QUETTA, July 30 (Reuters) - At least 18 coal miners were killed after an explosion buried parts of a mining complex in Pakistan's Balochistan province on Thursday, the Balochistan government said.

A rescue operation is still underway to find and recover the remaining 14 trapped miners, the government said in a statement.

Shoaib Nosherwani, Balochistan's minister for mines and mineral development, earlier told Reuters that 36 people were in the collapsed part of the complex at the time of the explosion.

Of them, 25 were missing late on Thursday night, he said.