Mark Hunt, a mixed kiwi martial artist, revealed that one of his relatives was tragically involved in the horrific events of last week in Christchurch, New Zealand.
The UFC star turned to Facebook previously to publish a video of a wealthy man who reads an inspirational text aloud, while at the same time announcing that his uncle was killed in the atrocities.
50 people were killed and another 50 wounded when an armed man opened fire on two separate mosques in the city of South Island, just minutes away, during last Friday's Friday prayer.
Those who perished had an age between the youngest and the retired, with the youngest victim being just 2 years old.
Living in Auckland, the 44-year-old former heavyweight champion of the UFC traveled to Christchurch after news of the shooting.
It is the latest in a series of difficult events that the "Super Samoan" has had to overcome.
In a 2015 interview, Hunt revealed that his childhood was ruined by the hands of a violent father.
My old man was ruthless. He terrified us. He began with mental games before he even found the instruments with which he struck us. Once he tied me in the garage with his hands over his head and beat me with a trembling broomstick. I ran away and my brothers followed me. They said what the fuck I'm going back or we'll all understand.
The superstar also made two periods in prison as a teenager, as well as developing the game of chance, alcohol and drug addiction later in life.
His brother John took his own life in December 2014.
Hunt's UFC contract ended after losing by unanimous decision to Justin Willis at UFC Fight Night 142 in Adelaide, Australia, at the end of last year, but the New Zealander wishes to continue fighting.