A methane explosion in a coal mine in Pakistan's Balochistan province has killed at least 34 miners, authorities said. The blast occurred more than a kilometre underground and also damaged two adjacent mines. Rescue teams worked through the night to locate missing workers, but reports differ on how many are still unaccounted for. Times of India says ten miners remained trapped, while France 24 reports two missing. DW says several remain unaccounted for. Authorities believe methane gas built up and caused the powerful blast. Compensation has been announced for the families of the deceased. Balochistan is Pakistan's poorest province but rich in resources, and mining accidents are common there. The incident renews concerns about safety in the country's coal mining industry.