Seven dead, 92 missing in mine explosion

At least seven miners have been killed in a methane gas and coal dust explosion in eastern Ukraine.

About 92 workers remain missing.

The morning blast at the Zasiadko mine in the Donetsk region is one of the largest coal-industry accidents this year.

More than 250 miners were working underground at the time of the explosion.

Some 155 miners were safely brought to surface, including six who were hospitalized with burns.

Four of the hospitalized workers were in grave condition.

It is not immediately clear what caused the explosion at the mine, which was also the site of a May 1999 methane gas explosion that killed 50 miners and left dozens injured.

One miner who escaped the accident unharmed described seeing "piles of bodies" while making his way to the surface.