Amtrak reports delays along the Northeast Corridor due to signal power issues and says crews are actively working to resolve the issue.

Downed wires on tracks in Philadelphia are impacting Amtrak service in Boston and across the Northeast, the company said Monday morning. The downed wires forced the suspension of part of Amtrak’s northeast service on Sunday between New York’s Penn Station and Philadelphia.

Amtrak passengers faced delays of 30 to 60 minutes Sunday night because of power line issues along the Northeast Corridor, which provides service between Washington, D.C., and Boston, officials said.