01/23/2012 09:08 am ET Updated Mar 24, 2012

Tracy Morgan, '30 Rock' Star, Hospitalized At Sundance Festival

UPDATE: Tracy Morgan has updated his Twitter status. He wrote on Monday:

"Superman ran into a little kryptonite. The high altitude in Utah shook up this kid from Brooklyn. Thank U 2 the hospital staff. Back at work 2morrow shooting 30 Rock. Holla at me! Gotta thank the AMAZING medical staff and all my supporters! Love you. #GOgiants @Giants #ALLIN."

Tracy Morgan fell unconscious during an awards ceremony at Sundance in Park City, Utah, Sunday evening.

The "30 Rock" star collapsed outside of the building shortly after being honored at the Creative Coalition Spotlight Awards, where he "seemed out of control, yelling and falling onto the ground," the Hollywood Reporter reports. The actor, 43, was escorted out of the building after giving his speech, then was rushed to the hospital. TMZ has since obtained a record of the 911 phone call that called Morgan's breathing "not normal."

According to a spokesperson for the hospital, no drugs or alcohol were found in Morgan's system.

Meanwhile, Morgan's reps have released this statement: "From a combination of exhaustion and altitude, Tracy is seeking medical attention. He is with his fiancee and grateful to Park City Medical Center for their care. Any reports of Tracy consuming alcohol are 100 percent false."

Morgan, who suffers from diabetes, underwent a kidney transplant on December 10, 2010.