Murrieta Police responded to a 911 call reporting a shooting at about 8 p.m. Wednesday at Spelly's Pub & Grille at 40675 Murrieta Hot Springs Road in Murrieta.
When police arrived, a man in front of the bar was quickly taken into custody. The man identified himself as an off-duty Riverside County sheriff's deputy.
Inside the bar a man shot several times was lying on the floor.
The deputy was identified as 42-year-old Dayle Long, a 10-year veteran of the Riverside County Sheriff's Department.
Long was charged with murder in the shooting death of 36-year-old Samuel Vanettes. Vanettes was pronounced dead at the scene.
There were reportedly 20 to 30 people inside the bar when the shots were fired.
Witness Rob Kielar, the bar's DJ, said there was an altercation inside the bar that may have led up to the shooting.
The Riverside County Sheriff's Department did not comment on the shooting other than to say the investigation is being handled by the Murrieta Police Department.
Long has been relieved of duty pending the outcome of the investigation.
"This is a horrible tragedy that happened to unfortunately take place at Spelly's. We all know that the world can be a scary place and it is horrible when it hits us so close to home in our close knit town."
Anyone with information related to the case should contact Murrieta Police at (951) 696-3615.