Updated

Turkey's state-run news agency says 17 workers have been killed as a methane gas explosion caused the collapse of an underground chamber in a coal mine in northwestern Turkey.

The Anatolia news agency says 29 other miners have been evacuated and the rescue work is now over.

The blast Tuesday at the mine near the town of Dursunbey in Balikesir province buried the miners nearly 820 feet below the surface on.