A man grabbed woman’s rear end twice within the span of a few seconds inside of a Brooklyn deli, police said on Thursday.

The man went up to the woman inside the Dekalb Deli on Dekalb Avenue near Ashland place at about 12:35 a.m. on March 16, cops said.

He then wrapped his arms around her and groped her, video of the attack shows.

The woman backed away and called 911, cops said.

But the suspect ran up to her again and smacked her on the rear end, the video shows.

The suspect, who is still at large, was last seen wearing a black baseball hat, a black jacket and gray sweatpants, police said.