A man used his cell phone to record under a 29-year-old woman's skirt while she walked up the stairs at the 74 Street/Roosevelt Avenue E train station earlier this week. The victim chased after him, but was unable to apprehend him.

Cops say the incident happened at around 5:05 p.m. on Tuesday. The victim says she first bumped into the perv before walking up the stairs. A passersby subsequently told her that the man had been filming under her skirt, and she began chasing him. He fled the station and ran in an unknown direction.

Cops say the suspect is a male, 40 to 50 years old, 5'7" in height, medium build; last seen wearing a dark colored striped shirt, dark colored jean shorts, black sneakers and he had on a black backpack. You can see surveillance video of him below:

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 or by texting their tips to 274637 (CRIMES) then enter TIP577. All calls are strictly confidential.