Urijah Faber posted a message on Twitter that stated MMA veteran Joe Camacho had passed away of a heart attack early Monday morning.

Camacho, who ran the Joe Camacho Brazilian Jiu-Jitsu Academy, competed as a lightweight inside the cage. He was 13-19 in his career, including a pair of 2013 fights for Bellator in which he lost via decision.

His most recent bout came on November 2 when he lost to Cleber Luciano at Bellator 106.

Camacho’s first official fight came in 1999, as he lost to Joe Stevenson. He strung together a five-five unbeaten streak between 2006-08, and competed against the likes of Fabricio Camoes, Roger Huerta and Antonio McGee during his career.

If you wish to leave him a message, you can do so on the official Facebook page for the gym.

Other people involved in the MMA world sent in their condolences to the news.