Police are looking for a person caught on video assaulting a fellow 6 train rider.

The incident took place on Friday afternoon, September 8th, around 2:23 p.m. The NYPD described the incident as follows:

[A] 70-year-old female victim was seated aboard a northbound 6 Train when an unidentified female boarded the train at 68th Street and sat beside her. The unidentified female's elbows repeatedly came into contact with the victim, so the victim moved to another seat. A verbal dispute ensued and then escalated when the unidentified female slapped the victim in the face, then re-engaged her and struck her again. The unidentified female fled the train at the 86 Street Station.

The victim got out at 96th Street and was treated by EMS for pain and swelling to her face and head, police say.

Surveillance video released by the police shows the heated altercation, with the suspect standing and victim sitting; the victim appears to strike back at one point and other passengers also seem to try to intervene:

Anyone with information in regards to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782). The public can also submit their tips by logging onto the Crime Stoppers website at WWW.NYPDCRIMESTOPPERS.COM or by texting their tips to 274637 (CRIMES) then enter TIP577.