The 9:05 a.m. train out of Haverhill was cancelled Tuesday. (Photo by Carl Stevens-WBZ NewsRadio 1030)

BOSTON (CBS) – Standing in the bitter cold waiting for a train wasn’t the only problem for several MBTA commuters north of Boston Tuesday morning.

There were plenty of cancellations and delays on the Haverhill, Lowell, Fitchburg and Newburyport-Rockport lines.

Check: Transit Updates

It began when an out-of-service commuter train derailed in Andover around 4 a.m., so inbound service on the Haverhill Line was halted at Lawrence Station.

Haverhill Line passengers may consider taking the Lowell Line from Anderson/Woburn. There is a large parking lot to accommodate passengers. — MBTA Commuter Rail (@MBTA_CR) January 5, 2016

Buses took riders between Lawrence and Andover station, where they could then board a Boston-bound train.

Commuter rail problems. People are being bussed from Lawrence to Andover to get to Boston. pic.twitter.com/LLw4lzziFR — Carl Stevens (@carlwbz) January 5, 2016

Then, ten commuter rail trains were also canceled Tuesday, according to the MBTA’s website, many due to “track problems.”

It’s not clear yet if the problems or the derailment are weather-related.

Leslie Aun, a spokeswoman for Keolis, which operates the commuter line, told WBZ-TV in an e-mail the “incident is under investigation.”

The Commuter Rail tweeted that the Haverhill line had returned to normal service shortly before 3 p.m.

Haverhill Line Update: Track repairs have been completed in Andover and normal service is resuming on the Haverhill Line. — MBTA Commuter Rail (@MBTA_CR) January 5, 2016

WBZ NewsRadio 1030’s Carl Stevens reports