Police and fire crews were on scene of an incident on the train tracks at Riverside and Marshall roads in Abbotsford.
A man was in custody and was reportedly pepper-sprayed by police sometime before 11:30 a.m. Wednesday.
The exact circumstances of the incident are not known. A CP Police spokesman would only say that police arrested a trespasser on railroad property.
Members of the CP Police Service, the Abbotsford Police Department and Abbotsford Fire Rescue Service were all on scene.