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ORLANDO, Fla. — Five people, including the gunman, are dead in a Monday morning shooting at business headquarters in Orlando, Florida, authorities said.

Four men and one woman were killed when a “disgruntled employee” opened fire at Fiamma Inc., which makes awnings for campers and other recreational vehicles, Orange County Sheriff Jerry Demings said.

Eight people survived. The lone shooter allegedly spoke to one of those survivors and told her to leave the area.

The deceased range in age from 35 years old to their 70s, the sheriff said. Their names have not been released yet.

The shooter was identified as John Robert Neumann Jr., Demings said. He was 45, lived alone with no family in the area and was discharged from the Army in 1999.

Neumann died from an apparent self-inflicted gunshot wound at the scene, just before deputies arrived, Demings said. He was carrying a semi-automatic gun, a large hunting knife and a smaller knife, though there’s no indication he used the knives in his attack, the sheriff said.

The shooter was fired from the company in April, the sheriff said. Three years ago, in June 2014, authorities were called to the business because the Monday shooter allegedly “battered” another employee. No charges were filed at that time.

Deming said the shooter has a “minor” criminal history, with a conviction for marijuana possession, DUI and misdemeanor battery on his record.

There is no evidence the shooting is terror-related, Deming said.

The violence was reported about 8 a.m. Soon after, the sheriff’s office reported the situation is “contained,” meaning there is no longer an active shooter.

Authorities closed the road near the scene and have urged motorists to “use caution.”

Local news outlets reported that several Orange County Fire and Rescue vehicles were seen leaving the scene. A large police presence remains.

Workers’ families can reunite with their loved ones on the campus of Full Sail University at 3535 North Forsyth Road. Questions can be directed to 407-679-0100, extension 3087.