Shanghai - A subway train crash that occurred on Shanghai's subway Line 10 on September 27 was caused by negligence, with twelve people disciplined in connection with the accident, investigators said Thursday.

Among those punished was Tang Zhihua, chief dispatcher of the Line 10 operation control center. He was removed from his post, according to the investigation team.

The crash occurred at about 2:51 pm following a signal system failure at a station on the Line 10 subway, injuring over 290 passengers.