A power outage caused quite a few headaches for commuters using the Long Island Rail Road this morning.

The MTA says LIRR service has been restored into and out of Penn Station with residual delays.

The agency says it's all due to signal trouble east of the East River tunnels caused by the power outage.

The MTA says there will be limited shuttle service operating in 15-minute intervals between Jamaica and Penn, and in 30-minute intervals for Forest Hills, Kew Gardens, and Woodside stations.

Limited Port Washington Branch service is also restored in both directions at this time.

The MTA is cross-honoring LIRR fares on the E, 7, and 2/3 subway lines.

Amtrak trains headed to and from Connecticut and New England were also delayed as a result of the power outage.

It's not known at this point how the evening commute will be impacted.

For the latest updates, visit mta.info.