The attack occurred on the 700 block of East M Street at approximately 9:35 p.m.
Investigators say the suspect sexually assaulted the woman as she walked to her friend's house after corning her near some shrubs out of sight from passing motorists.
According to police, the victim had met the suspect a while earlier while waiting at a bus stop. She siad the man had identified himself as Tony.
The suspect was described as a Hispanic man between 30 to 50 years old, standing between 5 feet 7 inches and 5 feet 10 inches tall, weighing about 150 pound with black hair and brown eyes. He has acne marks on his face and two scars on his abdomen. The suspect was last seen wearing gray sweatpants, black boots, and a gray hooded zip-up sweatshirt.
If you recognize the suspect or have information on the assault, you're urged to contact Colton Police Department Detective Ray Mendez at (909) 370-5110.