THE BRONX - Police are looking for the man involved in a sexual assault who was caught in the act.

Police say a man grabbed a 30-year-old woman from behind and threw her down to the ground. At that point, a passerby stepped in and rushed to the victim's aid. The victim is at a local hospital where she is being treated for injuries.

Police say the suspect is Hispanic with dark hair. Anyone with information about the incident should call Crime Stoppers at 1-800-577-TIPS.