By CBS3 Staff

PHILADELPHIA (CBS) – Philadelphia police are investigating a home invasion and sexual assault in the city’s Spruce Hill section. Police say a knife-wielding teen broke into a woman’s apartment and sexually assaulted her multiple times over a three-hour period.

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The incident happened on the 400 block of South 45th Street, around 2:30 a.m. on April 21.

Police say the teen, believed to be 16 years old, left through a basement window and fled in an unknown direction.

He is described as a Black male, dark skin, 150-160 pounds, 5’9”-5’10’, with a thin muscular build, brown eyes and possibly wearing green contact lenses, with braids in his hair that come down to his eyebrows. He was last seen wearing a black hooded sweatshirt, white tank top, gray sweatpants with black zippers and black sneakers.

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CBS3’s multiple requests to interview Philadelphia Police went unanswered.

Police say he may have cut or dyed his hair, per a conversation the victim had with the male while he was in her apartment.

If you see this suspect do not approach, contact 911 immediately.

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CBS3’s Joe Holden contributed to this report.