A woman was sexually assaulted while sleeping in her Mission Hills home early Sunday, a police officer said.

The victim was asleep in her bedroom in the 1800 block of Hancock Street shortly after 3 a.m. when the suspect entered her residence and sexually assaulted her, Officer Robert Heims said.

When the victim awoke and screamed, the suspect ran out the front door, the same way he entered.

Police described the suspect as a Hispanic man in his 20s, about 5 feet 7 inches with a muscular build, wearing a blue polo shirt and gray or denim shorts.

Just hours after the assault, maintenance crews were at her apartment changing the locks. The victim says her front door was locked but believes an ex-roommate who left on bad terms gave the man a key.

"She's the person," said the woman. "I know she sent this guy to hurt me."

Other neighbors say they have seen a spike in crime around the complex. A woman said someone tried breaking into her apartment two weeks ago.

"They didn't know we were awake and we heard the trolley," said the neighbor. "The door almost opened."

She believes they take advantage of the noisy trolley to mask the sound. That is why she places a chair with two glasses up against the door at night.

"The cup is going to break and I would just notice," she said.

As for the victim of the assault, she is just glad her 18-year-old daughter was not home and hopes neighbors will be extra vigilant.

"When I thought about it, I just get very depressed. I'm not going to sleep comfortably for a while," she said.