Associated Press Kimbo Slice (right) fights James Thompson on May 31, 2008 at the Prudential Center in Newark, N.J. Slice died Monday at the age of 42.

Professional mixed martial artist Kimbo Slice died Monday at the age of 42.

The announcement of his death came hours after Slice was reportedly hospitalized near his South Florida home for “undisclosed reasons.”

Scott Coker, president of MMA company Bellator, confirmed the news.

“We are all shocked and saddened by the devastating and untimely loss of Kimbo Slice, a beloved member of the Bellator family,” Coker said in a statement. “One of the most popular MMA fighters ever, Kimbo was a charismatic, larger-than-life personality that transcended the sport.”

Born Kevin Ferguson on Feb. 8, 1974 in the Bahamas, Slice first gained fame in the early 2000s as a backyard brawler whose street-fighting videos went viral online.

Slice made his MMA debut in 2007. According to TMZ, the 6-foot 2-inch, 225-pound brawler fought his last fight in February at Bellator 149, where he defeated Dada 5000. The victory, however, was reportedly overturned after Slice “tested positive for a banned steroid.”

Slice had a 5-2 record as an MMA fighter, his Bellator profile noted. He was also an undefeated professional boxer with a 7-0 record, TMZ reported.

Slice is survived by his longtime partner Antoinette Ray and six children.

Fans and fellow fighters took to social media to express their shock and sadness at the news of Slice’s death.

RIP Kimbo. U were a good man with a great heart! Mike Jai White & Kimbo Slice on set of Blood and Bone https://t.co/5YRcY9Xzfk via @YouTube — Michael Jai White (@MichaelJaiWhite) June 7, 2016

I remember a time when watching Kimbo Slice's street fights was the primary reason for using YouTube. #RIPKimbo 🕸 pic.twitter.com/Y7LKZihdWu — Chris Webby (@ChrisWebby) June 7, 2016

R.i.p kimbo slice you where an amazing fighter and inspiration ❤️ — Daniel sahyounie (@danielsahyounie) June 7, 2016

Can't count how many hours I spent watching old Kimbo Slice YouTube videos back in the day. Was one of a kind. R.I.P., Kimbo. — Chris Mannix (@ChrisMannixYS) June 7, 2016

man, wtf. rip kimbo slice dawg. from backyard fight to ufc. respect. — BEEZ (@bugattibeez) June 7, 2016

Thanks for the entertainment @KimboSlice RIP — Shane Carwin (@ShaneCarwin) June 7, 2016

RIP to the King of Backyard Knockouts, Kimbo Slice. Dude threw absolute bombs 💣💣💣💣💣💣 #UFC #MMA https://t.co/l5pPUBIWse — Tom Fink (@finkdontstink) June 7, 2016

Incredibly sad to hear of the passing of 42 yr old Kimbo Slice. RIP Kevin, you gave us all so much 2 talk about and enjoy. Rest well #AskBJM — Big John McCarthy (@JohnMcCarthyMMA) June 7, 2016