The 34-year-old singer and actor -- who recently appeared in the Broadway touring company of Wicked -- went into greater detail on Instagram, where he posted a photo of him with his mother.
“Last night I got the worst phone call that anyone can get about a loved one,” he wrote. “My parents were in a head on collision yesterday evening with a drunk driver. My mom was driving and got the worst of it. She is in the ICU and will have to undergo multiple surgeries as she has broken nearly every bone in her body.”