At least three people were stabbed in the Union Square subway station around 4 AM on Friday morning, reports Pix11.

Police told CBSNewYork that two groups of men entered “a dispute” in front of Webster Hall and continued fighting on the subway platform near 4th Avenue and 14th Street. One man had a gashed across his forehead, one across his face, and another was wounded in the back. They were taken to the hospital.

Pix11 notes that the attack “briefly affected subway traffic,” forcing 4, 5 and 6 trains to run express between Union Square and Grand Central.

The suspect is still at large.

(Photos: Wally Gobetz)