On Tuesday around 4:46 a.m., officers responded to the Mount Rubidoux walking trail where they learned a woman was walking near San Andreas and Glenwood avenues when she was attacked.
The suspect was described as a Hispanic man in his early to mid-20s with a slender build. Police said he was last seen wearing dark clothing with a hood over his head.
Anyone with information is urged to contact Detective Daniel Suarez of the Sexual Assault - Child Abuse (SACA) Unit at 951-353-7120 or DSuarez@RiversideCA.gov.