An investigation has been launched after a window of a commuter train on the Norwich-London mainline was smashed yesterday .British Transport Police is appealing for information after the National Express East Anglia train was struck in the Stowmarket area on Sunday evening.

An investigation has been launched after a window of a commuter train on the Norwich-London mainline was smashed yesterday .

British Transport Police is appealing for information after the National Express East Anglia train was struck in the Stowmarket area on Sunday evening.

The conductor reported the smashed window at 5.20pm as the train travelled from Norwich to Colchester.

A spokesman said: 'BTP take these types of incidents very seriously and we are appealing for anyone with any information about the incident to come forward. Throwing stones is a form of criminal damage and we will arrest anyone found doing so.'

'Not only can throwing stones and other missiles cause delays and cancellations to services, there is also the potential for a serious accident or injury to be caused to passengers and staff as a result of these offences.'

Anyone with information is asked to contact British Transport Police on 0800 40 50 40 quoting reference number 291 of 14/03/2010, or call Crimestoppers anonymously on 0800 555 111.

For further details see tomorrow's paper.