Last bodies pulled from Russian coal mine

VORKUTA, Russia, June 27 (UPI) -- The bodies of the last two victims of a coal mine explosion in Russia were recovered late Wednesday, bringing the official death toll from the blast to 10.

Investigators were still unsure what sparked the methane explosion that ripped the Komsomolskaya mine in Vorkuta Monday.

Inspectors found no evidence that mine operators had violated safety rules, the Russian technical standards agency Rostekhnadzor told the Interfax news agency. There was so immediate sign of problems with mine equipment that might have contributed to the blast, officials said.