Police are looking for a suspect who they say slashed a man yesterday afternoon at the entrance to the Penn Station subway station at 34th Street and 7th Avenue.

The 51-year-old man was at the corner of 34th and 7th at about 3 p.m. when he got into an argument with an unknown individual, who police say was looking for money and is also male. Cops say the victim walked away from the dispute, heading into the 1/2/3 train station on the block, but the suspect followed him and confronted him again.

Police said that the man continued to walk away, at which point the suspect slashed him in the back, causing a laceration over three inches long and half an inch wide. The suspect then fled.

According to NBC New York, the two knew each other and may have been arguing over money involved in a drug deal.

The victim was transported to Mount Sinai Roosevelt Hospital, and his injuries are not life threatening, according to the police.

No arrests have been made, and the investigation is ongoing. Police reportedly closed off that entrance to the subway while they investigated through Friday's rush hour.

This slashing was the second to occur in the subway system yesterday: early Friday morning, a mugger slashed a man in the face at the Chambers Street station while the man was exiting the station. There have similarly been no arrests yet in that case.

The city has seen an increase in the number of slashings this year: to date, there have been 989, compared to 817 during the same period last year. Though the NYPD says there's no slashing trend, they've launched a number of initiatives apparently in response to the uptick, including deploying more officers to the subway system and increasing enforcement against stores that sell box cutters.