A fourth woman was fondled near Washington Park on Tuesday in the latest attack by what appears to be a serial groper.

Around 12:20 p.m. the woman was walking toward the park on Kentucky Avenue, between Gilpin and Franklin streets, when she passed a man standing in the alley, according to Denver police. After she passed, the man allegedly approached her from behind and fondled her.

The suspect, who was described as being in his early 30s, heavy-set, bald and wearing a white T-shirt, sped off in what appeared to be a black or dark colored Nissan Altima or a four-door Maxima.

A similar suspect was involved in an alleged groping on Aug. 21. Around 2:30 p.m., a woman was fondled while she was walking near Fifth Avenue and High Street. A few minutes later a second woman was walking just a block away when a suspect matching the description of the first man grabbed her buttock and fled in a dark car.

Both women told police that the man parked in an alley and waited from them to walk by.

Around 7 p.m. on Aug. 28, a woman was approached by a man matching the suspect’s description near Osceola and West 37th streets. The man allegedly grabbed the woman’s backside and fled.

A $2,000 reward is being offered for information that leads to the suspects arrest. Anyone with information is asked to call Crime Stoppers at 720-913-7867.