MILWAUKEE -- Milwaukee police are looking for the man who went behind the counter of a south side George Webb Restaurant and punched an employee in the face.

It happened Friday, June 29 -- just after 1 a.m. at the restaurant near S. 21st and Mitchell.

Police say the woman was seriously injured and was transported to an area hospital. Police say they are now searching for a known suspect.

Milwaukee Alderman Bob Donovan sent the surveillance video to TODAY'S TMJ4 -- and hopes the public can help the Milwaukee Police Department locate the suspect as soon as possible.

“It is sickening to see this unsuspecting worker assaulted so brutally by this individual,” said Alderman Donovan, chair of the Public Safety and Health Committee in a news release. “It was an unprovoked attack and I am asking anyone with information to please contact MPD immediately at 414-935-7360 so we can get him off the street and behind bars where he belongs."

Near the end of the video, a George Webb co-worker is seen pointing a gun at the suspect to get him away from the victim.

George Webb issued the following statement Friday afternoon:

“We were alerted to an incident that took place at our Mitchell Street location on June 29 and are working directly with the injured employee, store manager and franchise owner to review the events. The safety and security of our employees and patrons is our top priority. We are working with our team, and local law enforcement to assess current security measures and determine next steps.”

According to the Alderman Donovan, that employee had a concealed carry permit for the firearm – was successful in getting the suspect to leave the premises.

“One can only imagine what might have occurred if that employee had not pulled out her weapon,” the alderman said. “Sadly, I’m told the co-worker quit her job shortly after the incident.”

“And can you really blame her for quitting? This is just sickening and I am tired of this crap happening in my district and in too many other neighborhoods across Milwaukee,” he said.

Anyone with information on this incident is urged to call police.