A manhunt is underway for the man police say shot and killed another man inside a subway station in Midtown Manhattan on Saturday afternoon, according to the NYPD.

It happened just before 12:30 p.m. at the 7th Avenue station near West 53rd Street.

Sources close to the investigation say they believe the victim and two other men were arguing on the northbound E train platform when gunfire erupted.

The victim suffered a gunshot wound to the chest. He is believed to be in his 30s, according to police sources.

Paramedics rushed the man to Bellevue Hospital, where the NYPD says he was pronounced dead.

Citizen app footage from the scene shows a large NYPD presence in the area.

The NYPD released images of the alleged gunman just hours after the shooting.

Police say he was last seen wearing a red tracksuit, a black vest, a black face mask and carrying a backpack.

Notify NYC alerted the public to expect road closures, traffic delays, mass transit disruptions and emergency personnel in the area.

According to the MTA, A, C, D, E and F trains are skipping the station as of Saturday afternoon due to the NYPD investigation.

The NYPD urges anyone with information to call its Crime Stoppers Hotline at 1-800-577-TIPS (8477).