Train operator Northern and Network Rail are appealing for information after a group of individuals threw a log into the path of an oncoming train near Bolton.
The incident, which happened on the Manchester side of Farnworth Tunnel, happened just before 6.30pm on Monday evening.
It resulted in a smashed window and caused a brief fire on the service, which was travelling from Blackpool North to Hazel Grove with more than 100 passengers on-board.
Fortunately no one was hurt, everyone was safely evacuated from the train and it was moved away from the scene last night so repairs to the railway could take place.
More than 31 other trains were delayed as a result of the incident, which is now being investigated by British Transport Police.
Chris Jackson, regional director for Northern, said: “This was totally reckless behaviour by mindless individuals who gave no thought for other people’s safety.
“The consequences of a log hitting a fast-moving train are potentially devastating and I urge anyone with information as to the identities of those responsible to contact British Transport Police.”
As well as damaging the Northern train, the vandals wrecked more than 200 metres of the complex web of 25,000 volt overhead electric cable which power trains, as well as the structures and equipment which hold them up.
Network Rail engineers worked throughout the night to get the wires fixed and trains are now running through the area again.
