Story highlights Slice, 42, became an internet sensation starring in videos of amateur, bare-knuckle fights

He is survived by six children

(CNN) Mixed martial arts fighter Kimbo Slice died Monday, according to the MMA organization that represented him.

He was 42 years old.

"One of the most popular MMA fighters ever, Kimbo was a charismatic, larger-than-life personality that transcended the sport. Outside of the cage he was a friendly, gentle giant and a devoted family man," said Bellator MMA President Scott Coker. "His loss leaves us all with extremely heavy hearts, and our thoughts and prayers are with the entire Ferguson family and all of Kimbo's friends, fans, and teammates."

Saddened and shocked at the passing of our family member Kimbo Slice. Full statement: https://t.co/TsTCujfoIK pic.twitter.com/RwxjwdAP1k — Scott Coker (@ScottCoker) June 7, 2016

Local media reports said that Slice, whose real name is Kevin Ferguson, had been hospitalized earlier Monday in South Florida. His official website also confirmed his death.

Sgt. Carla Kmiotek told CNN police in Coral Springs, Florida, did not receive any police or EMS calls to Slice's residence before he was hospitalized.