Cal Fire determined the cause of the fire was a "smoke-generating pyrotechnic device."
The couple both pleaded not guilty during their arraignments Tuesday. They were released on their own recognisance until their next scheduled court date in September, Mr Anderson said.
CNN reached out to an attorney for the couple but has not heard back.
No sign of an ending to devastating California wildfires
"You're obviously dealing with lost lives, you're dealing with injured lives, and you're dealing with people's residences that were burned and their land that was burned," Mr Anderson said.
A smoke bomb set off by the couple in southern California, on September 5 sparked the fire.(MediaNews Group via Getty Images)