Mitchell Guist, one of the bearded alligator-hunting brothers from the reality show Swamp People died on May 14 at the age of 48.

Mitchell was out on his boat along the Belle River in St. Martin Parish, La., when he fell and suffered a seizure, according to TMZ. Another passenger returned the vessel to the dock and called 911. Emergency personnel responded to the scene and transported Mitchell to a nearby hospital, but it was too late.

Sources close to the reality star say that Mitchell had recently fallen ill, but the nature of his sickness remains unclear.

“We are extremely saddened to report that our friend and beloved member of the Swamp People family, Mitchell Guist, has passed away earlier today. Mitchell passed on the swamp, doing what he loved,” said a rep from The History Channel.

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