Supperclub -- Not Connected to Deadly Shooting

The shooting in Hollywood that left one person dead Saturday night had no connection to Supperclub ... law enforcement sources tell TMZ.

We're told detectives have determined the victim and the shooter who were fighting before shots rang out just happened to be on the same street as Supperclub.

The club's management also says they checked the surveillance video and neither the shooter nor the victim were ever inside the club Saturday night.