Riverside police released a sketch of the man, who is described as Hispanic, 20-30 years old and has been seen driving a Toyota Tacoma pickup truck.
Riverside police say he has approached girls three different times outside Riverside Poly and Raincross high schools.
So far, all the girls have escaped.
"None of the females who were approached were actually assaulted by the suspect or brought into the vehicle. They were able to get away," said Officer Bryan Galbreath with Riverside police. "The suspect was attempting to lure them into his vehicle under the guise of providing some kind of modeling job for them."
Police are advising young women not to walk alone in the area. If you have any information about this man, you're urged to contact Riverside police at (951) 353-7120.