Jay Lenois recovering from surgery due to second- and third-degree burns after a gasoline fire this past weekend, according to his doctor.

Dr. Peter Grossman, medical director at the Grossman Burn Center, is treating the formerTonight Showhost, 72, and revealed during a press conference Wednesday that Leno’s injuries are serious, but he is in good condition.

On Saturday, the comedian was working on a steam engine underneath a car in his garage when a fire began. Leno was pulled from underneath the car, but suffered “significant” burns to his face, chest and hand.

While at Grossman Burn Center, Leno underwent a surgical excision and grafting procedure to the burned areas, his doctor explained, noting that a lot of the thickness of his skin was injured. The surgery involves removing unhealthy tissue and placing a biological skin substitute on the wounds in order to expedite healing.

“Some of the burns to the face are a little deeper and a little more concerning,” Grossman said during the press conference.

Jay Leno.John Lamparski/WireImage

Comedian cattends the 2016 St. George Theatre Gala at St. George Theater on March 11, 2016 in New York City.

He added that the comedian is “in good spirits today” following his surgery, and another procedure will be needed later this week.

“Currently, there’s no evidence of nerve damage. I do anticipate him making a full recovery. Whether they’ll be remnants of this injury, it’s still too early to tell,” Grossman said. “I’d say that his injuries are serious, his condition is good.”

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Jay Leno

On Monday, Leno spoke out for the first time since enduring the “serious medical emergency.”

“I got some serious burns from a gasoline fire,” Leno said in a statement shared with PEOPLE. “I am ok. Just need a week or two to get back on my feet.”

Aimee Bennett, a spokesperson at the Grossman Burn Center, also issued a statement to PEOPLE, confirming that Leno was being treated there after the incident in his garage.

source: people.com