A train on the Glasgow to Ayr line has been hit with a brick threw from a bridge police have said.
The driver of the train suffered facial injuries after a brick was thrown through the windscreen of his cab.
The driver, 43, was struck while travelling near Johnstone, Renfrewshire, at about 9.55pm on Monday night.
It was believed the brick came from a bridge at McLaurin Crescent, Johnstone.
A second driver who was on board at the time drove the train to Kilwinning, where the injured man was treated by paramedics.
The driver was left shaken by the incident.
First ScotRail, the operators of the damaged train, said passengers had continued their journeys using the next available service.
A spokesman for the company, First ScotRail who run the trains said: “We hope that BTP inquiries lead to an arrest and a conviction for whoever is responsible.”
The incident is believed to have taken place at an overbridge at McLaurin Crescent, Johnstone.
Police said they are examining CCTV footage and speaking to residents near McLaurin Crescent.