Some subway service in New York City was suspended after a train incident on the A line in Upper Manhattan.

MTA officials declined to comment on their “investigation” beyond the suspensions, which they announced on Twitter. FDNY confirmed on Twitter it was at the scene of “a subway incident,” and there are currently three non life-threatening injuries.

Passengers shared photos and messages that described a chaotic moment when an A train crashed into a wall at 125th Street in Manhattan.

The A train is a major line in New York City, running through Manhattan and connecting the borough to Brooklyn. Frustrated commuters who were stuck on other trains shared their anger on Twitter.