PHILADELPHIA (CBS) – A downed tree in Chester County is causing major traffic delays for Amtrak passengers Friday afternoon.

Crews are working to remove a tree which toppled over several overhead wires near Paoli.

Amtrak passengers should expect 40-minute up to hour delays on the Keystone Service between Philadelphia and Harrisburg, according to Amtrak officials.

Passengers who paid for travel on a canceled train may contact Amtrak for a refund or may reschedule.

For more information www.Amtrak.com.