The Polk County SWAT medic who was injured Friday evening in an armed standoff with a suicidal man is expected to make a full recovery, authorities said.

John Mikula, a 10-year veteran of Polk County Fire Rescue and 5-year SWAT medic, was shot in the shoulder and treated at Lakeland Regional Medical Center. The agency said on its Facebook page Saturday it is "relieved to announce" Mikula will recover.

The shooting happened after Michael Phillips, 39, barricaded himself inside a building east of Winter Haven off Dundee Road for hours Friday. Phillips apparently set the building on fire and died inside.

Officials said they found melted machine guns, gas cans, and a charred bulletproof vest found on Phillips' body after the fire was put out.

"He was trained and he was ready to die and he and we wanted to take law enforcement officers with him," Judd said.

The series of events began Thursday night, when Phillips was being taken to Bartow Regional Medical Center by his mother, who later told the Polk County Sheriff's Office her son had been threatening to harm himself.

On the way to the hospital, Phillips jumped out of the vehicle at U.S. 17 and Ernest M. Smith Boulevard. He fired a shot into the the air and ran into the woods.

Around 2 p.m. Friday, Phillips' mother called 911 and said she believed her son was at his business, Polk Plumbing, at 2286 Executive Road S., and that he was dangerous. Phillips was thought to have been living at the business for a while.

Deputies, including SWAT team members, went to the building to attempt to coax Phillips out. But as they started to push a vehicle out of the way, Phillips fired multiple shots. One of those struck Mikula, Sheriff Grady Judd said.

"He said if you breach the door, I’ll blow you up. It will be a chemical reaction. There will be a huge fire, and everything he promised us came true," Judd said.

Officers and Phillips then exchanged gunfire.

"It was a war zone for a few minutes, " Judd said.

During the exchange, the building erupted into flames. More shots were exchanged, and then the gunfire went silent.

The business was mostly destroyed.

Judd said that during discussions with negotiators earlier Friday evening, Phillips said he had chemicals and was going to blow up the building.

The fire inside in the building spread to adjoining businesses, including Jason Deeringer's.

"I tried to reach out to him yesterday and he actually replied to me, and I tried to be very polite to him and tried to get him to surrender, and he said that he had love for me and love for another tenant there and he liked us and we were good people and he said that he had love for the officers

A medical examiner will determine whether Phillips died in the fire or of a gunshot wound.