Concern is growing for the mental well-being of Kanye West after the rapper went on his most unhinged rant yet on stage in Sacramento last night (19 November).

The Life of Pablo star claimed to be risking his life by revealing that award shows are fixed in favour of Beyonce, and that her husband, Jay Z, employs contract killers who West fears could be sent to kill him.

The sensational allegations are the latest in a long line of recent comments made about the couple by Kanye. Last month he called out the pair for failing to provide support after his wife, reality TV star Kim Kardashian, was held in a gunpoint robbery in Paris in October.

The 39-year-old began his career helping producing beats for Jay Z and has since collaborated on joint album, Watch The Throne, with the rap legend.

Addressing the crowd, Kanye made clear the apparent vital urgency of his comments, before first calling out Beyonce by suggesting she colluded in award show corruption at the MTV VMA's earlier this year.

"I've been sent here to give y'all my truth – even at the risk of my own life, even at the risk of my own success, my own career," he said.

"Beyoncé, I was hurt! 'Cause I heard that you said you wouldn't perform unless you won Video of the Year over me, and over 'Hotline Bling'.

"In my opinion – now, don't go tryin' to diss Beyoncé, she is great. Taylor Swift is great," Kanye continued. "We are all great people, we are all equal. But sometimes, we be playing the politics too much and forgetting who we are – just to win. F*** winning! F*** looking cool! F*** looking cool! F*** being cool! F*** all that!" he continued.

Watch footage of the monologue below:

The Georgia rapper then turned his attention to her husband with comments normally only found on online conspiracy forums.

"I've been sent here to give y'all the truth. Jay Z, call me, bruh! You still ain't call me! Jay Z, call me! Jay Z, I know you got killers, please don't send them at my head."

The latest rant comes days after Kanye cited further controversy by claiming he would have supported President-elect Donald Trump in the US election.