A man intentionally set fire to a curtain at a Washington, D.C., pizza restaurant that is at the center of a bizarre online conspiracy theory, police said.

Several spent matches and a bottle of lighter fluid were found near the burned curtain that hung in the backroom of Comet Ping Pong after the alleged arson on Wednesday, according to a police report.

The curtain was destroyed in the fire, which was put out by staff members at the Northwest Washington restaurant, the report said.

An image of the suspect — who is still at large — was captured on surveillance video, investigators from the Bureau of Alcohol, Tobacco and Firearms said.

He’s described as man between the age of 25 and 30, with blonde hair, a mustache and a beard.

The restaurant is at the center of the “Pizzagate” conspiracy theory that went viral on internet forums during the 2016 presidential election.

Proponents of the theory believe there is an underground pedophilia ring in Washington created by prominent Democrats.

In 2016, a North Carolina man walked into Comet Ping Pong with a rifle and fired three rounds in the restaurant before being arrested. He was sentenced to four years in prison for the shooting.

With Wires