A man was pushed from a station platform onto train tracks and racially abused.
A woman and two men were involved in the incident at Anniesland station in Glasgow on Sunday afternoon.
After getting back onto the platform, the man was allegedly assaulted and racially abused by a separate man.
A man has been arrested in connection with the second assault.
British Transport Police are appealing for information about the incidents.
DS Dougie Gallacher said: “Remarkably the victim is relatively uninjured as a result of being pushed on the tracks and the following assault on the platform, however this could have easily been a lot more serious.
“We believe the man was assaulted on two separate occasions, the first being when he was pushed onto the tracks and the second when he was back on the platform.
“The train that was at the station at the time was the 1640 service from Edinburgh to Helensburgh and we’re appealing to passengers on the train and station who may have witnessed what happened to get in touch with us.
“We also have descriptions of three of the people involved which we are issuing in a bid to identify them. If you have any information please contact us by texting 61016 or calling 0800 40 50 40 quoting 436 of 27/08/2017.”
One man is white, medium build with shaved hair. He was wearing an orange long sleeved top, black body warmer, dark coloured knee length shorts and white trainers.
The second man is white, medium to large build, with shaved hair and wearing a black long sleeved jumper, jeans and brown shoes.
The woman is white, medium build with brown hair in a ponytail. She was wearing a light coloured jacket, pink top, light coloured jeans, trainers and had a black bag.