A Metro-North train on the New Haven line derailed in Rye, New York Thursday evening, causing injuries and delays through the night.

Metro-North says the train left the Stamford, Connecticut station at 4:31 p.m. with about 185 people on board. About a half-hour later, it was going around a curve when five of its 12 cars came off the tracks.

Of the 13 people injured, four, including the train's conductor, were hospitalized in White Plains and Greenwich and are expected to be OK.

Metro-North says there was "significant" damage to concrete railroad ties in the area.

Westchester County Executive Rob Astorino says that while the cause of the derailment is under investigation, speed likely played a role. He says the train appeared to have been traveling around the bend just of the Rye station at a speed higher than the 10 mph limit there.

A railroad spokesman says crews would be working through the night to make repairs in hopes of providing what they call a "relatively normal" rush-hour service Friday morning.