PHILADELPHIA (AP) — A fire on the tracks beneath a commuter train in suburban Philadelphia is leading to travel delays.

A Southeastern Pennsylvania Transportation Authority spokesman says the fire that broke out Wednesday afternoon at the Glenside Station is causing service to be suspended on the Warminster and Doylestown lines.

All passengers on the train have been evacuated, but he's not sure yet how many were onboard.

TV station helicopter footage of the fire showed thick black smoke pouring out from beneath the train.