Gainesville Fire Rescue says Joseph Prettyman, a Bite Squad employee, intentionally started a blaze at the company's office building.

A recent fire at the Gainesville office of a popular food delivery service was caused intentionally by an employee, authorities said Wednesday.

Gainesville police say Joseph Allen Prettyman, 43, of Keystone Heights, started the blaze at the building that houses Bite Squad, 4113 NW Sixth St., and another business at about 6 a.m. Sept. 19, according to a Gainesville Fire Rescue news release.

Security camera footage from the business shows a man with Prettyman’s build and walk entering the business, according to an arrest report from the Gainesville Police Department. Prettyman is one of four people who have the code to open the office’s door, his manager told police.

The man in the security footage is shown entering the business after hours, the report said.

The man stole about 20 Samsung tablets valued at more than $1,000, the report said, before pouring an unknown liquid on the walls and floor.

A short time later, the report said, the footage showed a flash from fire, which increased in size before fully igniting the carpet.

Prettyman’s manager, who has known him for years, identified him in the footage, the report said.

Prettyman told police he had been in the business several times the morning of the fire, the report said, but denied setting the fire.

Firefighters arrived on the scene within four minutes, the release said. They found no one inside after searching the building, and extinguished the fire in about 20 minutes.

The offices sustained extensive fire damage, the release said.

Gainesville police arrested Prettyman on charges of burglary, grand theft and arson.

He was taken to the Alachua County jail where he remained Thursday.