Rampage Jackson's immediate reaction after hearing the news of Charlie Kirk's death was caught on a live stream.
On Wednesday, conservative activist Kirk was shot while speaking at an event held at the Utah Valley University.
As per the police, the shooting took place at around 12:20pm local time.
The 31-year-old was later pronounced dead and is survived by his wife and two young children.
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According to the BBC, officials believe that the shot came from a roof, with a manhunt currently underway to find the shooter.
The BBC also claimed that two people had initially been arrested but were later released after finding out that they had 'no ties' to the horrific incident.
Tributes have since flooded in for Kirk across different social media platforms.
Reacting to the news, President of the United States of America, Donald Trump, declared that Kirk's death is a 'dark moment for America'.
Meanwhile, former US President Joe Biden wrote: "There is no place in our country for this kind of violence. It must end now. Jill and I are praying for Charlie Kirk’s family and loved ones."
Rampage Jackson reacts to Charlie Kirk's death
Former UFC star Quinton 'Rampage' Jackson, who won the UFC Light Heavyweight Championship and the Bellator Season 10 Light Heavyweight Tournament Championship during his career, was appearing on a live stream when he heard the news of Kirk's passing.
As shown in a video posted on social media, Jackson looked stunned as he said: "What? He died? Ohhh he died, Charlie Kirk died.
"That's sad, for having an opinion about things."
Jackson has been in the news in recent times after his son, Raja Jackson, appeared to assault professional wrestler Stuart Smith.
The 25-year-old entered the ring and slammed Smith, who also goes by the name of Syko Stu, onto the ground and knocking him out.
Raja was then seen throwing multiple punches at Syko Stu's head.
Since the incident took place and the footage was shared across social media, Rampage Jackson has spoken out multiple times and has also offered his best wishes to Syko Stu and his family.
Marcus Chan