According to the internal communication, the alleged assault happened on June 29 at the Southlawn Palms Apartments on Faulkner and Scott.
The suspect entered the woman's apartment through the window at night. Afterward, the bulletin says, he returned with another woman to fight her because she was calling the police.
The suspect is known as "Gelato" and police believe he's homeless but known to people in the complex who help him with basic needs.
It's not clear why Houston police have not released the information and the suspect's photos to the public.
On Friday, the department said the suspect forced his way inside and attempted to sexually assault the victim, who is 27 years old, but provided little additional information.
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