Translink is offering up to £1,000 for any witness who can provide evidence of the attack on one of its employees on Saturday night.
The public transport worker was attacked after a brawl involving 40 people broke out at Castlerock station.
A Translink spokesman said: “We are offering a reward of up to £1,000 for anyone willing to provide evidence leading to a conviction.
“We condemn in the strongest terms this incident of an attack on a Derry~Londonderry bound for Belfast last night at 5.38pm.
“The safety of our employees and passengers is our top priority. All of our employees have the right to work without fear of abuse or violence and we ensure that our colleagues are all offered appropriate support.
“We are assisting the PSNI in their investigations, including providing CCTV from the train, Castlerock station and bodycam footage.”
Three people arrested in connection with the fight have been released, while two others have received community resolutions.
Police said the fight started on board the train before spreading to the platform in the village of Co Londonderry.
Five people were arrested after the altercation.
A woman (23) arrested on suspicion of bodily harm has now been released without conditions.
Another woman, 64, who was arrested on suspicion of mutual assault was released without charge.
A man (22), who was arrested on suspicion of joint bodily harm, was released until the public prosecutor’s office (PPS) reported it.
A man (30) arrested on suspicion of assault and a woman (39) arrested on suspicion of assault together have received a joint dissolution order – an extrajudicial order that does not appear in the criminal record.
https://www.belfasttelegraph.co.uk/news/northern-ireland/translink-offering-up-to-1k-for-information-relating-to-assault-of-worker-at-castlerock-train-station-41911094.html Translink offering up to £1k for information relating to assault of worker at Castlerock train station