Police say the attack happened at a nightclub on Broadway between West 48th Street and 49th Street just after 4:30 a.m. on Sunday.
According to the NYPD, a 21-year-old and a 26-year-old were both slashed in the face.
First responders transported the victims to an area hospital. Officials say the two people are expected to be OK.
There are no arrests.
Authorities are trying to determine what led up to the slashing.
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