GO Transit says a train derailment caused it to temporarily stop service on its Richmond Hill line Monday morning.

Transit officials say the "minor derailment" happened just after 7:30 a.m. and the the 7:25 a.m. and 7:55 a.m. trains from Richmond Hill station to Union station were suspended. Service resumed just before 10 a.m.

York Regional Police say no injuries have been reported but a user on Twitter says one rail car came off the tracks and passengers are being asked to move down the train for "safety reasons."