San Diego police are investigating an alleged North Park sexual assault.
The victim is a 15-year-old girl. Police said she told them a man in his 20s grabbed her as she was walking in the 4200 block of Iowa Street around noon on Monday.
The victim said the man threatened her with a knife and assaulted her, then let her go on Thorn Street.
The girl was taken to Rady's Children's Hospital for treatment.
