Police arrested a 42-year-old man Wednesday night in connection with a recent series of flashings in the University District.

A joint patrol unit of Ohio State and Columbus Police officers arrested Charles W. Holcomb after an officer reportedly saw him masturbating with a penis pump while looking into a woman’s Norwich Avenue residence. The officer discovered him while searching the area after responding to another report of public indecency in the area, for which Holcomb has been charged.

Police say Holcomb is a suspect in a recent series of similar incidents in the University District, including one that occurred Wednesday night on Eighth Avenue. According to police reports, three women said they saw a man exposing himself outside their apartment near South Campus.

Investigators are still trying to determine how many incidents he is linked to and how long he has been performing such acts in the area, but similar incidents have been reported since at least June.

Holcomb is listed as a registered sex offender and was charged Wednesday with public indecency, voyeurism, criminal trespass and possession of criminal tools.