Lowlife gropes woman's buttocks on Brooklyn sidewalk — then repeatedly punches her in face after she tries to slap him

Police are on the hunt for a male who was caught on surveillance video groping a woman's buttocks on a Brooklyn, New York, sidewalk — and then repeatedly punching her in the face after the victim tried to slap him.

What are the details?

A 26-year-old woman was walking near the corner of South 4th Street and Havemeyer Street in the Williamsburg neighborhood around 2:15 a.m. Saturday when a stranger caught up to her and grabbed her buttocks with his right hand, the New York Post reported, citing video police released Tuesday.

Image source: Twitter video screenshot via @Pix11News

The clip then shows that woman trying to slap the suspect:

Image source: Twitter video screenshot via @Pix11News

The suspect then repeatedly punched the victim in the face, the paper said.

Image source: Twitter video screenshot via @Pix11News

Image source: Twitter video screenshot via @Pix11News

Image source: Twitter video screenshot via @Pix11News

Video shows the suspect taking off after the disturbing incident, the Post said.

What else do we know?

The suspect made some sort of statement during the assault, but the victim didn't remember what he said, police told the paper.

The victim suffered facial bruising and swelling, police noted to the Post, and she did not immediately report the incident to authorities.

The NYPD's Brooklyn Special Victims Squad is investigating, the paper said.

What do we know about the suspect?

Police said the suspect is about 35 years old, 6-feet tall, 150 pounds, and has black hair and brown eyes, the Post said, adding that he was last seen wearing a dark baseball cap, a do-rag, a white T-shirt with dark sleeves and the number "88" on the back, denim shorts, and white sneakers.

A separate video offers a better look at his face:

Image source: Twitter video screenshot via @Pix11News

Here's the clip:

Rash of violence in Brooklyn

There has been a rash of violence in Brooklyn over the last month:

• A violent repeat offender was caught on police bodycam video smashing a glass bottle over a New York City police officer's head in an unprovoked attack late last month.
• A mugger was caught on video beating a 68-year-old man senseless in broad daylight late last month; police sources said the beatdown commenced after the victim refused to give up his belongings.
• Earlier this month, a man tried to get past a couple blocking a train station escalator but they wouldn't let him through. Then, he was stabbed in his stomach amid an argument.
• A woman was caught on video walking up to another woman and shooting her dead in front of numerous witnesses — and then casually walking back to her vehicle.
• A pair of gunmen were caught on surveillance video opening fire on two occupants of a parked car in a middle-of-the-night ambush.

This story has been updated.