A train crash in north-east China on Sunday was reportedly caused by the theft of electrical cables.
The crash killed at least five people and injured 30.
The missing cables were part of the signalling system, so the driver of one train did not know the other train was on the track, the China Daily said.
Correspondents say that, because of high global copper prices, the theft of power lines for their copper wire is now rampant in China.
The accident happened north of Shenyang, Liaoning province, when a passenger train from the northern city of Xian rammed into the back of a cargo train travelling to the north-east city of Changchun.
The China Daily quoted a survivor of the crash as saying it was lucky a lot of people had disembarked just before the accident.
The crash happened after electrical wire was stolen from a switching station, the China Daily said.
But other state media said broken signalling equipment caused the crash.