AKIPRESS.COM - A gunman described by Florida police as “a disgruntled employee” shot dead five former colleagues at a business in suburban Orlando on Monday before killing himself, investigators said, Guardian reported.

John Robert Neumann Jr, 45, entered the premises of Fiamma, a manufacturer of awnings for recreational vehicles, at about 8am, armed with a semi-automatic pistol and a large hunting knife, said Orange County sheriff Jerry Demings at an afternoon press briefing.

Demings said that Neumann, a US army veteran who was fired from the company for undisclosed reasons in April, began shooting almost immediately then moved through the building purposefully, “singling out the individuals that he shot”.

“Most of the victims were shot in the head, some multiple times,” Demings said. “He had a plan of action and he executed his plan today.”

The victims, four men and one woman, were all employees of the family-owned company in north-east Orlando and ranged in age from their early 30s to their 60s, Demings said.

Deputies arrived within two minutes of a 911 call reporting an active shooter and found three men and the woman dead at the scene. The fourth male victim was taken to the Orlando regional medical center with gunshot wounds but died there.