Police are seeking a man caught on video punching a 79-year-old man in the head on a Brooklyn sidewalk Friday.
Officials released surveillance video early Saturday of the moments an unidentified suspect stepped off his motorized scooter and approached the victim on 4th Avenue in Gowanus.
The video shows the suspect walk up behind the victim and take a large swing, connecting with the 79-year-old's head and knocking him to the ground.
The suspect immediately runs back to his parked scooter and speeds away.
Get Tri-state area news and weather forecasts to your inbox. Sign up for NBC New York newsletters.
Authorities have not released any motive in the midday assault or what may have led up to attack.
The police investigation is ongoing.
Copyright NBC New York