At least 10 workers have been killed and 13 others may be trapped after a coal mine collapsed in eastern India.
Heavy smog has prevented rescue workers from entering the open coal mine in Jharkhand state until early Friday morning, according to SK Singh, the general manager of the Rajmahal Open Cast Mines.
Jharkhand police spokesman RK Malik said 23 workers were reported missing after the accident. Ten bodies have been recovered, leaving 13 people unaccounted for.
The Godda district where the mine is located is more than 975 miles south-east of New Delhi.
The coal mine is owned by the state government but is leased to a private contractor.
Jharkhand is one of India's poorest states but is rich in mineral resources.
It has the third-highest coal deposits of India's 29 states and the country's highest deposits of iron ore. Mining and related industries are the state's economic backbone.