Police on Sunday released surveillance footage of a perv who pedaled up to a woman on a bike on a Brooklyn street and grabbed her butt, police said.

The man was riding his bike on the sidewalk on 4th Avenue near 3rd Street in Gowanus on the afternoon of May 23 when he grabbed the 33-year-old woman, authorities said.

The suspect then pedaled away on his bike, police said.

He was last seen wearing a grey hat, blue jeans and a black t-shirt with a white pig on it, authorities said.

Police have not arrested the suspect, authorities said.