Shots rang out, police say, after the man was thrown out of the Genesis Tavern for smoking around 12:45 a.m. Sunday.
The man returned with a gun and, from outside, fired 11 shots through a glass door into the tavern.
The suspect is described as a black male, in his 30's, with a bald or shaved head and a mustache. He was last seen wearing a beige plaid shirt and beige pants. Police also say the man has a Caribbean accent.
Officers say that the gunman fled in a maroon-colored vehicle going east on Roberts Avenue.
Anyone with information on the gunman or his whereabouts is being asked to call the Philadelphia Police Department at 215.686.TIPS or submit a tip online.
One woman who was in the bar, but did not want to be identified, spoke to Action News.
"Everybody just fell down, people just pushed people, [I heard] 'get down, get down, get down,'" the woman said. "[There were] people on the floor bleeding, people trying to leave."
Surveillance video shows the man roaming around the bar area shortly before the shooting.
Police say after he was told it was illegal to smoke inside the Germantown bar and he refused several times to stop, he is seen being thrown out by the bouncer.
Outside, the video shows him exchanging words with the bouncer and doing some kind of dance before running off.
Ten minutes later, he returns with a gun and fires 11 shots through the door.
When it was all over, six innocent bystanders had been shot.
Killed in the gunfire was Carl Sharper, 43, of North Philadelphia. His fiancee, Drexie Charles, spoke to Action News, saying they were planning to marry on August 27th.
"All I see is a killer, that's not a man, it's just a killer as far as I'm concerned. He killed an innocent person, for what?" Charles said concerning the man in the surveillance video.
Monday night, Sharper's grief-stricken mother Prudence had not seen the surveillance video and wanted Action News to show it to her.
"I hope they catch him and I hope you rot in hell, that's all, because it hurts," Prudence said after viewing the video.
Family members who had been planning for Sharper's wedding are now planning for his funeral.
"We just need to get things done, bury my son and take it one day at a time," Prudence said.
The family want Sharper's killer caught.
"Someone knows who he is, whoever knows who he is come forward, come forward, identify him, let him face the consequences of his actions," Drexie said.
"I really loved my brother and I wish he was here. I'm begging you all, please stop, stop the killing," Carl's sister Leslie Sultan said.
Among the wounded were a 46-year-old woman who was shot in the stomach, a 33-year-old man was shot twice in the back, a 36-year-old man who was shot in the legs, a 20-year-old woman shot in the arm and another woman was grazed by flying glass.