UPPER EAST SIDE, Manhattan (PIX11) — A knife-wielding man got into a packed subway car in Manhattan and then, upset about being “pressed up against this door” threatened riders, police said Tuesday.

The man got onto a southbound no. 6 train at the 77th Street/Lexington Avenue station on Sunday afternoon, officials said. He got aggressive and brandished a switchblade as the train left the subway station.

“I’ll take your head off your [expletive] neck,” he said to one rider.

The man got off the train once it arrived at the 68th Street/Lexington Avenue station, police said. The NYPD asked for help identifying the man.

No injuries were reported in connection with Sunday’s incident.

Submit tips to police by calling Crime Stoppers at 1-800-577-TIPS (8477), visiting crimestoppers.nypdonline.org, downloading the NYPD Crime Stoppers mobile app, or texting 274637 (CRIMES) then entering TIP577. Spanish-speaking callers are asked to dial 1-888-57-PISTA (74782).