Police are looking for a suspect they say masturbated in front of an senior citizen riding an elevator in her Bronx apartment building. 

The suspect followed the 75-year-old victim into her apartment building afternoon of Monday, July 6. When the woman entered the elevator, the suspect stopped the door from closing, exposed himself and started masturbating, police said. 

The suspect is described as a black male, 20 to 30 years old, 6 feet tall, 225 pounds with short black hair. He was wearing dark sweatpants and black shoes during the incident. 

Anyone with information is asked to call Crime Stoppers at 800-577-TIPS or submit their tip online at www.nypdcrimestoppers.com