A train driver had to be taken to hospital after a brick was thrown at the windscreen of the front carriage while moving.
Northern have issued a plea for information following the ‘shocking’ and ‘reckless’ incident, which occurred over the weekend.
The rail operator said as a train was travelling towards Clifton on Friday evening (February 4) at around 10pm, a brick was thrown at the windscreen, causing it to smash.
Shards of glass hit the driver in the face.
The driver was taken to hospital and is now said to be recovering at home.
A British Transport Police (BTP) investigation is currently underway.
Chris Jackson, regional director at Northern, said: “It’s hard to believe that anyone would put the safety of others at risk by such reckless behaviour.
“The consequences of a brick hitting a fast-moving train are potentially devastating. This was a shocking incident that could have had fatal consequences.”
Northern has now stepped in to help appeal for further information - with a £1,000 reward for anyone who provides information which leads to a conviction.
The train operator said people need to ‘stop taking risks on the railway’ and realise the potential consequences of ‘such reckless behaviour’.
Chris added: “Officers are investigating, and I am appealing to anyone with information about either incident to come forward.
“Someone will know who did this and we need to find them before they do something similar which may have far worse consequences.”
Anyone with information can contact BTP by texting 61016 or by calling 0800 40 50 40.
Alternatively, people can call Crimestoppers, anonymously, on 0800 555 111.