On Tuesday, the man followed the 13-year-old girl as she walked home from school. Police responded to the girl's home in the 4000 block of Rio Vista Avenue and she told investigators he had forced his way through the front door of her home as she went inside. She fought him off and he fled before police arrived.
The girl then locked the door after he left, hid in a closet and texted her father: "DADDY COME HOME NOW. SOME GUY TRIED TO RAPE ME."
VIDEO: Brave SJ girl describes frightening attack
The attack was caught on the family's home surveillance system.
"The guy starts a conversation with her and when she opens up the door, the suspect pushes her in, tries to sexually assault her as well. The little girl is brave, she fights back, and the guy leaves on foot," San Jose Police Sgt. Enrique Garcia said. "He's not concerned about being caught, since he's doing this in broad daylight."
On April 2, the same suspect is believed to have followed a 28-year-old woman into a public restroom at Mitsuwa Marketplace, a Japanese grocery store at 675 Saratoga Ave.
He attempted to sexually assault the woman in the restroom and fled before police arrived shortly before 1 p.m.
PHOTOS: SJ police say girl attacked by predator at home
Police released surveillance photos of the man from both locations.
He is described as a white man about 30 years old with a medium height, a thin build and a beard. When he followed the teen girl home from school, he was wearing a black beanie, a blue long-sleeved button-down shirt, light-colored cargo shorts and a dark messenger bag. He may have been riding a light-blue 10-speed bicycle as well.
"We need to put a stop to this immediately. We're really concerned that he's going to strike again and we need the public's help," Garcia said.
The suspect remains at large. Anyone with information about him has been asked to call San Jose police Detective Brandon Scholten at (408) 277-4102. Anonymous tips can be left at the Crime Stoppers tip line at (408) 947-7867.
ABC7 News contributed to this report.