Investigations have revealed that the suspects had pelted stones at the train while fishing.They were between the ages of 20-30 and residents of Bambalapitiya.
Last week an Asst Education Director travelling in a Vavuniya bound train intercity train from Colombo was hit by a stone thrown by a mischief maker and he succumbed to the injuries at the Anuradhapura Teaching Hospital.
Police have failed to yet failed to apprehend the suspects.
The railway sources said around 200 security personnel had been deployed to protect commuters.
