Videos shot on Metro trains that focus on young women with bare legs have been posted to a pornography website.

A reader first alerted PoPville to the videos, which Metro told WJLA are being investigated by Transit Police. The uploader of the video describes some of the people in the videos as “teens,” while others are called “bitch” or “slut.”

While the uploaded videos do not appear to show the women’s underpants, so-called “upskirting” is a problem on Metro. A woman wrote in to Collective Action for Safe Spaces in October to report being photographed under her skirt on an escalator.