Updated

A Pakistani mining official says a methane gas explosion in a private coal mine in the southwest has killed eight miners.

Senior mining inspector Iftikhar Ahmed said two miners were found unconscious after Monday's blast, in Duki village.

He said two miners were still missing and rescue workers were trying to reach them.

Ahmed said dozens of miners angered over the incident rallied there Monday, demanding action against the owner.

He said the miners accused the owner of ignoring safety measures and that authorities have opened an investigation to determine what caused the blast.

Such incidents are common in Pakistan, and miners usually blame owners for deaths.

The mine where the latest incident took place is 50 kilometers (30 miles) northeast of Quetta, the provincial capital of Baluchistan province.