The case against suspected arsonist Forrest Gordon Clark will be handed over to the Orange County District Attorney’s Office Wednesday afternoon, according to Susan Schroeder, the Orange County District Attorney’s Office chief of staff.

Clark, who has been tied to the Holy fire burning in Orange and Riverside counties, faces charges that include two counts of arson, criminal threats and a misdemeanor charge of resisting arrest. He is scheduled to be arraigned Thursday morning.

The announcement was made Wednesday afternoon at a news conference at the Orange County Fire Authority headquarters in Irvine.

“Arson is a terrible crime that destroys dreams,” Schroeder said.

MAP: This map shows where the Holy fire is burning in Orange and Riverside counties

The starting of the Holy fire was an intentional act, but they are still trying to determine exactly how it began, said Shane Sherwood, battalion chief with the OCFA. He said the “strongest evidence is witness statements.”

Other evidence included items found at his cabin, Sherwood said.

No witnesses saw Clark start fire, according to Sherwood, but the area where the fire started is believed to be near his cabin. Twelve structures were destroyed in the blaze, so far. Clark’s cabin has been untouched by the flames.

Clark is not believed to be tied to any other fires in the area, authorities said.

By Wednesday afternoon, the Holy fire scorched more than 6,200 acres. It started just after 1 p.m. on Monday, Aug. 6.

Wednesday, the U.S. Forest Service announced mandatory evacuations for the following canyon areas: McVickers, Rice, Horsethief, Glen Eden, El Cariso Village, Sycamore Creek and Rancho Capistrano.

“We know this area burns, but it should never burn due to an intentional act,” Orange County Supervisor Todd Spitzer said.

Spitzer, who represents the area impacted by the fire, said his constituents are scared, fleeing their homes and leaving property behind. The supervisor said he wanted the blaze to be re-named the “Holy Hell” fire.

“This is a monster,” Spitzer said. “Who would go out with low humidity and high winds and the highest heat temperature this time of year and intentionally set the forest on fire?”