At least three people have been killed and 17 are missing, after a road caved in on a subway tunnel under construction in the eastern Chinese city of Hangzhou.

At least three people have been killed and 17 are missing, after a road caved in on a subway tunnel under construction in the eastern Chinese city of Hangzhou.

Nineteen people have been taken to hospital. An investigation team has been set up to probe the cause of Saturday's accident. Witnesses and rescuers earlier said at least 50 people, mostly construction workers, were trapped underground. But the exact number is still unknown. About 30 workers managed to escape. Eleven vehicles are also trapped in a 75-meter-long, 15-meter-deep crater after a section of road collapsed into the tunnel.