SPOKANE, Wash. -

Police are investigating a vicious early morning attack outside of the Satellite Diner where the victim was knocked unconscious when he was sucker-punched by a street kid.

The attack happened about 1:30 a.m. when a man who had just walked out of the Satellite Diner was confronted by a shirtless teen. The distracted victim never saw the attack coming.

"And another one of these kids goes up and sucker punches him. It appears the victim hits his head on the window or wall of this business he goes down," Spokane Police Commander Joe Walker said.

While the victim lies unconscious on the sidewalk, the group who attacked him ran down the block and the returns to celebrate their cowardly act like they've scored a touchdown.

"Looks like they're robbing him or taking items from him, it's disgusting," Walker said.

The video, shot by a KXLY photographer who was in the area getting video of another incident, was shown to downtown conditions police officers who were able to immediately name several of the suspects, including the kid that assaulted the victim.

"Because they're down there day after day after day and so now seeing this we're going to get those officers out working this case, we'll have detectives helping them solve this incident," Walker said.

Police think it's the same group of kids who used a steel pipe to smash out the window of Sport Town at Main Street and Stevens Street.

"They did anywhere from five to eight thousand dollars in damage between this big window, my display case, my neon signs and they took $1,500 of merchandise," Steve Warwick of Sport Town said.

So far, police have arrested two people from the Sports Town burglary and two people from the Satellite assault.

Around 3:30 p.m., officers were able to track down and arrest the suspect who sucker punched the man in front of the Satellite Diner.

Late Thursday afternoon Spokane Mayor David Condon released this statement in regards to the video of the attack in front of the Satellite Diner.

"I am angered by this violence. We will neither tolerate this behavior in our city nor let it define who we are and what we want to be as a community. We are working hard to reduce crime downtown and around the city, and last night's incident both reaffirms the importance of that work and reminds us that we have more to do."