British Transport Police are appealing for information after bicycle was thrown from a bridge onto a train near Enfield Lock Station.
The bike hit the train and brought down overhead power lines on Monday, December 30, 2013 as the train headed towards London Liverpool Street, causing major disruption.
It is believed the bike was thrown from a bridge between Standard Road and Bradley Road in Enfield Lock. The incident was reported at 5.53pm.
Detective Constable Paul Cudby said: “We believe the cycle was deliberately thrown and dropped on to the train as it passed through.
“Deliberately putting objects onto the railway infrastructure may seem like fun to those who commit such offences but what they don’t realise are the potentially serious consequences of their extremely foolish behaviour.
“Trains travelling at high speeds risk being damaged or derailed, putting passengers’ and rail staff’s lives in danger.
“We treat incidents where the line has been obstructed extremely seriously and I’d urge anyone who recognises the bike, or who may have further information about what happened, to come forward."
Pictures of the bike have now been released by the BTP in a bit to find out who did it.