A man in a New Hampshire park has been “slapping” women from behind before riding away on his mountain bike, according to police who are investigating.

There have been five reported assaults in the past several days at Mine Falls Park, Nashua Police said.

“The suspect has been riding a mountain bike on the trails and as he is passing by females on the trails he is slapping them from behind and then riding away,” police said in a statement.

The male suspect is described as a 30-year-old white man, 5’11” tall, wearing all black clothing and a white N95 type mask.

“At this time no one has been injured and Detectives are actively investigating these incidents and we are urging anyone who has been the victim of a similar situation to contact the Nashua Police Department Crime Line at (603) 589-1665,” police said.

“The Nashua Police Department recommends anyone using Mine Falls Park use caution and travel with a companion for safety,” police added.