BROOKLYN - The NYPD has released a picture of a man wanted for attacking an elderly woman. 

According to police, the suspect approached the 75-year-old victim Saturday as she stepped off the elevator into the lobby of her apartment building. 

They say he shoved the woman to the ground and ripped the chain from around her neck. She sustained minor injuries to her knee and neck, and was treated at the scene. 

The suspect is described as a 21-year-old black man with medium complexion, black hair and facial hair. He's believed to be about 5 feet 9 inches tall and 130 pounds. 

If you have any information, call Crime Stoppers at 1-800-577-TIPS