Police were asking for the public's help in identifying a man who sexually assaulted a woman at knifepoint in a Reseda alley.
The 18-year-old woman, a student, was taking a shortcut home through an alley near Victory Boulevard and Corbin Street the night of March 27 when she heard the sound of a folding knife opening and felt someone grab her, the Los Angeles Police Department said.
The man held her against the wall with a knife to her throat and sexually assaulted her, then ran off.
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"The young victim went home, feeling scared and ashamed, but uninjured. She did not tell anyone what happened for several weeks," the LAPD said in a news release.
A family member convinced the woman to came forward to police.
Detectives released a sketch Wednesday in hopes someone could identify the attacker. They are also searching for surveillance video.
The man was described the man as about 26 years old, with a medium height and build.