While cameras rolled, he set fire to a New Orleans mansion owned by Beyoncé. Who is he?

With a security camera rolling, a man broke into a vacant Garden District mansion that belonged to pop superstar Beyoncé, doused the place with fuel, then set fire to the drapes before fleeing the scene, according to an investigation of the July 21 fire released this week.

The report, obtained through a public records request, provides the most detailed account yet of last summer’s arson at the former church in the 1500 block of Harmony Street. A company linked to the 28-time Grammy winner bought the Spanish baroque building, which had been converted into a 3-story house, in 2015.

While there is video of a man starting a fire, investigators have not arrested or identified him, a New Orleans police spokesperson said Thursday.

Firefighters first learned of a small blaze in the stately home, located just off St. Charles Avenue, after a smoke detector on the second floor of the “great room” alerted the company monitoring the alarm, the New Orleans Fire Department report said. Around the same time, police sent an officer to investigate a complaint of a suspicious person running away from the home.

When firefighters arrived they found kitchen cabinets and curtains on fire, which they were able to extinguish in less than an hour.

Though no one was living in the house, it had running water and electricity, the report said. Investigators became suspicious that the fire was intentionally set when they found the front door had been forcibly opened. Surveillance cameras also captured a man entering the home, then using what appeared to be a lighter to ignite the drapes in the great room.

While a free-standing partition blocked the cameras’ view of the kitchen, the video showed the man heading into that area. There, investigators found that two of the home’s electric ovens had been turned off after they were stuffed with papers, pamphlets and instruction manuals, the report said.

Investigators noticed burn patterns on the floor and cabinetry, and found evidence that surfaces in the room had been drenched in a flammable liquid then intentionally lit on fire, the report added. The report doesn’t identify the liquid, but investigators mention recovering a container with an odor resembling gasoline.

The report said that investigators interviewed a property manager who had locked the home three weeks prior to the fire. The manager said he had never seen any indication that vagrants would go into the property and couldn’t think of a motive for someone to intentionally set the house on fire.

The mansion — which has also been linked to Beyoncé’s rap superstar husband Jay-Z — has a long history.

The 15,000-square-foot building was erected in 1926 by the then-fledgling Westminster Presbyterian Church. It drew inspiration from Latin America’s Mission-style churches and cost $84,000 to build.

The church’s founding pastor, an admitted Ku Klux Klansman named J.C. Barr, left his flock in 1930 following a disagreement over the closure of a Presbyterian hospital. The congregation stayed at the building until the late 1960s. It was abandoned for several years after that.

Renowned New Orleans ballet instructor Harvey Hysell, who was the son of a church organist, spent about $100,000 to acquire the building in 1977 and turn it into a ballet school. The school operated there until 2001, training a generation of New Orleans dancers, before new owners renovated the building into a three-bedroom, 3½-bath house.

Beyoncé’s turn to own the home came in 2015. That’s when city records show that a shell company listing a mailing address for the management firm owned by the music icon, Parkwood Entertainment, purchased the home for $2.6 million.

After the fire, the home was listed for sale at $4.45 million, but it has not switched hands. Beyoncé’s family has not acknowledged ownership of the house or commented on the fire, but her representatives have not disputed her link to the home.

That property is separate from another century-old New Orleans church that Beyoncé reportedly bought in 2018, at the corner of Camp and Seventh Street, roughly a half-mile away.