Courtesy: MyFOXAtlanta

Police are still trying to figure out what triggered a mass shooting Tuesday night at a health spa in Norcross Georgia. The shooting left five people at the Su Jung Health Sauna, including the gunman, dead.

Mike Conti with FOX News Radio affiliate WGST has more from Atlanta:

Investigators are calling it a murder-suicide and say the two women and two men shot inside the health spa were targeted, but why the gunman launched the mass shooting and then killed himself, is still a mystery.

(Summers) "We're continuing to investigate motive and who thisĀ individualĀ is and why he came here and why he targeted the people that he targeted."

Norcross, Georgia Police Chief Warren Summers says the shooting happened so fast that many of the customers inside the spa didn't know what happened until it was over.

In Atlanta, Mike Conti for FOX News Radio