"Rumours online that Cat Zingano's husband has died. She's posted a series of photos of him on her FB page, saying 'I will always love you.'" Callum Leslie tweeted.
The entire MMA community mourned his loss by posting messages of hope and offering positive thoughts on the afternoon of Jan. 14.
"I feel so sick for @CatZingano right now. My heart goes out to you and the kids," Talk MMA tweeted.
Zingano, 37, went 6-0-1 in his MMA career, including two victories after turning pro in 1999.
He defeated Michael Miller twice in 1996, to go along with wins over Lane Andrews and Jeff Combs.
In 1998, Zingano won the Gracie National Jiu-Jitsu Championships and was awarded the purple belt.
In 2001, he won his brown belt and began focusing on teaching his BJJ skills to other Jiu-Jitsu students. Many of his students won various championships all over the world.
Zingano kept training Brazilian Jiu-Jitsu and MMA during his teachings and finally received his black belt in 2004.
He was married to UFC bantamweight contender Cat Zingano, one of the top 135-pounders in the world.
"My thoughts & prayers are with @CatZingano & her kids, so upsetting to hear this," Josh Hennig tweeted.
All classes at Team Zingano - Black House MMA Broomfield and Brighton schools were cancelled after the news came out, and classes will resume tomorrow, Jan. 15.
No official word yet on funeral arrangements for Zingano. More details will surely emerge as the day goes on.
Thoughts and prayers for Cat and the entire Zingano family on this tragic day.