PHILADELPHIA (CBS) — SEPTA is working to restore service that was brought to a halt by Friday’s powerful nor’easter.

Service remains suspended on some Regional Rail lines and delays remain on several others.

SEPTA took to twitter Sunday night to provide customer an update for their Monday commute saying, “#SEPTA will resume service on the Chestnut Hill East and West Trenton Lines at the start of service Mon. morning. Customers may experience delays on these and other Regional Rail lines.”

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SEPTA also said “#SEPTA will resume service on the Norristown High Speed Line for the start of service Mon. morning. Trains will operate with delays.”

SEPTA say all service has resumed on all other Regional Rail lines.

Riders are urged to check SEPTA’s website for service updates.