Dustin Smith, 31, who lives near the victim, was arrested Friday and booked into Sacramento County Jail on suspicion of rape, burglary, elder abuse and oral copulation.
Neighbors in the Wonner Way area of Citrus Heights told FOX40 they are not the type to keep quiet when they see something suspicious.
"We all look out of each other," said resident Kim Helmrich.
That's one reason why they're so shaken to learn someone broke into their elderly neighbor's home Thursday.
Helmrich was just one of several people who didn’t notice anything was wrong until police arrived.
"It's very frightening, I was walking right by her house when it happened," Helmrich said.
Citrus Heights police released a composite sketch after a woman told them a man she didn’t know attacked her at 6:30 in the morning. Investigators believe Smith came in through an open window.
"We've had break-ins and stuff like that but sexual assault is very scary," said resident Marybeth Majors.
“Vile crimes such as those committed by this suspect are reprehensible, and I am pleased he is behind bars," said Citrus Heights Chief of Police Ronald Lawrence. "As a result of outstanding, good old-fashioned police work by dedicated professionals of the Citrus Heights Police Department, we have successfully investigated, identified, and peacefully captured this despicable rapist."