Sacramento County Sheriff's detectives are trying find a man suspected of three separate sexual assaults along I-80 in the area of Watt and Madison avenues, and Auburn Boulevard over the last four months.

They also say in the most recent attack, the victim was kidnapped on Auburn Boulevard and later sexually assaulted near I-80 and Madison Avenue.

The attacker is described as a black male between 20 and 40 years old. He has a shaved head or short afro-style haircut, is clean shaven with a large build, and was wearing rectangular shaped glasses.

One alleged victims said he drove a red older model, box-type 4-door car.

If you think you know who the suspect is, or if you have any information regarding the crimes, you are encouraged to contact the Sacramento Sheriff's Department at (916) 874-5115.