Police need your help finding the man who attacked and robbed an elderly man in the Bronx.

We want to warn you that the surveillance video they have released is startling.

Investigators say it happened just after 7 p.m. Thursday inside an apartment building near Dekalb Avenue and East 213th street in Norwood.

The man can be seen grabbing the 79-year-old, throwing him to the ground and punching him in the face.

Police say he then took the man's cellphone and a wallet holding more than $200.

The victim was taken to the hospital and is in stable condition.

Anyone with information on the case should contact the Crime Stoppers hotline at 1-800-577-TIPS, or text CRIMES and then enter TIP577, or visit www.nypdcrimestoppers.com.