Police are looking for a man accused of groping three subway passengers along the 1 line, twice last month and once a few years ago.

Here are the incidents, which took place by Lincoln Center, Times Square and Columbia University, as the NYPD describes them:

Incident #1 (20 pct.): It was reported to police that on Monday September 19, 2016, at approximately 1740 hours, inside of a moving "1" train at the 66 Street subway station, the individual sat next to the 24 year-old female victim and rubbed the outside of her thigh.

Incident #2 (Midtown North pct.): It was reported to police that on Wednesday September 9, 2016, at approximately 1845 hours, inside of a moving "1" train at the 42 Street subway station, the individual sat next to the 18 year-old female victim and rubbed the inside of her thigh.

Incident #3 (34 pct.): It was reported to police that sometime between September 29, 2011 to June 30, 2012, inside of a moving "1" train at the 110 Street subway station, the individual sat next to the 13 year-old female victim and rubbed the inside of her thigh.

Update

: Well, this is awful—the NY Post reports that after the victim of the Times Square incident told the police about the incident, "The victim’s 18-year-old twin sister told cops the same man touched her at some point between 2011 and 2012 when she was 13."

Police release images of the suspect, describing him as being in his 40s and 6'0" tall; he was last seen wearing a green t-shirt and he carried a black backpack.

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. All calls are strictly confidential.

If you see or experience sexual misconduct in the subway (this includes seeing a masturbator, being groped, being grinded on, etc.), you can report it to the MTA and police on this website. There's also a place for you to upload photos and/or video. Don't let the perverts win.