A disgruntled former employee shot and killed five people at an Orlando, Florida, business Monday morning before turning the gun on himself, police said. 

Police have not named the dead gunman, 45, but say he has no ties to terror or subversive groups.

Police responded to the call about 8 a.m. at Fiamma Inc., which makes accessories for recreational vehicles, Orange County Sheriff Jerry Demings said. The business is located in an industrial area northeast of downtown.

Three men and a woman were found dead at the scene, Demings said. Another man died at Orlando Regional Medical Center.

Seven others were inside the business when the shootings took place.

'My boss is dead'

Shelley Adams told reporters she spoke Monday with her sister, who works at Fiamma and was in the restroom when she heard a noise.

Her sister came out and saw someone lying on the floor.

"She said, 'I saw too much. My boss is dead,'" Adams said.