Tracy Morgan, actor and comedian, passed out at the Sundance Film Festival where he was being honored with an award at the Creative Coalition Spotlight Awards. Shorty after his acceptance speech the 43-year-old actor was rushed to the hospital, and while hospital officials gave no other causes, they denied alcohol or drugs being found in his system.

Earlier today Morgan tweeted, “Superman ran into a little kryptonite. The high altitude in Utah shook up this kid from Brooklyn.” His spokesman, Lewis Kay, also released a statement blaming the altitude and exhaustion for Morgan’s collapse. In a separate tweet Morgan thanked the hospital staff for the care he received.

Morgan is best known as the character Tracy Jordan on the show 30 Rock and his eight seasons on Saturday Night Live. His latest film Predisposed will be premiering at the Sundance Festival this Friday.