Bellator MMA and King of the Cage veteran Joe Camacho died Monday at the age of 41.Camacho on Sunday returned home from a North American Brazilian Jiu-Jitsu Federation competition in Long Beach, Calif. According to his cousin, Charlie Valencia , Camacho told his girlfriend he was not feeling well over dinner. Valencia said the two later went to bed, with Camacho’s girlfriend awakening to his screams at 4 a.m. She called 911, and he was rushed to Queen of the Valley Medical Center, where he was pronounced dead of an apparent heart attack.A Brazilian jiu-jitsu black belt under Aloisio Silva, Camacho debuted as a professional mixed martial artist in 1999 and compiled a 13-19-3 record. He made his final appearance at Bellator 106 in November, when he dropped a unanimous decision to Cleber Luciano “He was a pioneer in the sport,” Valencia said, “and we will miss him.”Word of Camacho’s death hit those who knew him hard.“Just got the sad news from @charlievalencia that his brother & my friend & fellow MMA fighter Joe Camacho unexpectedly died today,” former World Extreme Cagefighting champion Urijah Faber tweeted. “RIP Joe!”