According to TMZ, his girlfriend, Omarosa Stallworth, saved his life. The former Celebrity Apprentice star sprang into action and performed CPR and resuscitated the 54-year-old actor.
Duncan was transported to a nearby hospital where he was admitted to the ICU. He's now resting comfortably.
A rep confirmed Duncan's condition to Fox News in a statement. "He is now stable and we look forward to his full recovery," it read.
Any information about Duncan's previous health condition is not known at this time.
Duncan is currently shooting a TV series, The Finder, and a new movie, The Challenge, according to IMDB.
Sending our prayers for a speed recovery.