Police said they found Patel with a wet spot on the front of his jogging pants.
Wednesday's incident is one of seven since December.
The suspect targets Hispanic women in the Bergen Square section.
Investigators said Patel would locate a target and then let her walk a few steps in front him. That's when he would pull down his pants and? you know the rest.
Police think there may be other victims and want anyone with information to call detectives at 201-547-JAIL.
Patel faces charges of criminal sexual contact, child abuse and public lewdness. Right now he's charged in two attacks.