Possibility of human error or signal failure being looked at as efforts to clear wreckage continue

With rescue work finished, authorities began clearing the mangled wreckage of two passenger trains that derailed in eastern India, killing more than 300 people and injuring hundreds in one of the country’s deadliest rail accidents in decades, officials said on Sunday.

Investigators are looking into possible causes behind Friday night’s crash in Balasore district of eastern Odisha state, including whether human error or signal failure played a role.