NEW YORK (AP) — Passengers aboard a Boston-bound Amtrak train say they were stuck in the Bronx for around five hours without heat.

The passengers took to Twitter on Friday morning with complaints being about cold and uninformed. They said they were in some unknown part of the Bronx.

@Amtrak is this a joke. We've been broken down with no heat for 4 hours in New York. #neveragain — Jen Schumacher (@JenSchumacher2) February 10, 2017

@Amtrak @AmtrakNEC Your train 66 out of DC has been stuck in Bronx, NY for 4 hours! No crew, no info. People are freezing cold, hungry! #911 — Backing The Blue (@priv8is) February 10, 2017

Amtrak tweeted its apologies and told them to call the railroad’s customer relations department.

The railroad later said in a statement that there’d been a problem with overhead electrical wires. It said crews restored power to the train at 7:10 a.m. and the train, which started in Washington, “was on the move around 7:30 a.m. Friday.”