The Carr fire has killed seven people and destroyed at least 1,077 homes.
Clark came to his home two weeks ago to return items he said he had "borrowed" from the fire department, Milligan said. But officials are concerned about flames creeping down hillsides toward neighborhoods.
A plane drops fire retardant behind homes along McVicker Canyon Park Road in Lake Elsinore, California, as the Holy Fire burned near homes.
"It looked like a tornado". "Hopefully I have a house in the morning". "But somehow they did".
Volunteer Fire Chief Mike Milligan, another resident of the canyon, said he's known Clark for 20 years and that he's had a history of mental illness and hospitalization.
More than 21,000 people have been evacuated in and around Lake Elsinore, where furious flames and billowing smoke rose into the sky at the edge of the city of 60,000 as the blaze, dubbed the Holy Fire, burned nearby in the Santa Ana Mountains.
The area of destruction is now larger than the entire city of Los Angeles.
The closure dealt a financial blow to Yosemite at the height of the summer season and caused upheaval for thousands of tourists whose summer trips were canceled.
As night fell Thursday, the Holy Fire had destroyed about a dozen structures since it erupted three days earlier in the Cleveland National Forest.
Information released by the Cleveland National Forest, which is where the fire is burning, indicates that in addition to the weather, steep terrain, and limited access, another reason they are losing ground is they are not able to obtain all the firefighting resources they have requested.
No more homes were torched on Friday but some 20,000 people remained under evacuation orders.
"I'm pissed, I'm outraged, I'm disgusted", Lake Elsinore Mayor Natasha Johnson told CBS News.
"It is nerve-wracking and unreal", she said. "Man, you know, we (are) just trying to get the job done".
The fire was deliberately set.
He was charged with arson, making criminal threats and resisting arrest. He is being held in lieu of $1 million bail.
Clark made several outbursts, claiming his life was being threatened and said the arson charge against him was a lie. At one point Clark covered his face with his long hair and later he stared directly at a camera providing a feed to reporters outside the courtroom.
Clark has been accused of setting a fire in Trabuco Canyon, the Orange County District Attorney's Office said after he was formally charged on Thursday.
The Complex fire is actually made up of two fires: the smaller River Fire, which has burned 48,920 acres, and the larger Ranch Fire, which has burned 255,482.
A fire official has said Clark sent threatening emails, including one that said, "this place will burn".