A group of muggers followed a man down a Brooklyn street and beat him unconscious during a robbery earlier this week, police said.

The trio followed the 30-year-old man as he walked on Fulton Street near Washington Avenue at about 12:40 a.m. on Tuesday, authorities said.

The man then turned around and confronted the group, cops said.

One of the suspect then cold-cocked him, sending the victim to the pavement, video of the attack shows.

The group then take turns punching him and stomping on him while rummaging through his pockets, according to the footage.

The suspects then ran off with the $200, the victim’s phone and a debit card, police said.

The victim, who was knocked out during the robbery, was taken to an area hospital after the mugging.