Kanye West has worried fans with an alarming Twitter post in which he suggested that he may be murdered.

The 43-year-old's mental health issues have returned to the fore in recent months, leading him to go on numerous Twitter rants in which he has publicly attacked his mother-in-law Kris Jenner and even his own wife, Kim Kardashian.

In the last few days West, who is bipolar, has turned his anger towards the workings of the music industry, comparing it to slavery and sharing multiple pages of his contracts with record companies.

In a further condemnation of the business, he also posted a video which appeared to show him urinating on one of his 23 Grammy Awards.

In his latest post early on Friday morning, West shared a picture of his seven-year-old daughter North West alongside the message: "NORTHY I AM GOING TO WAR AND PUTTING MY LIFE ON THE LINE AND IF I AM MURDERED DON'T EVER LET WHITE MEDIA TELL YOU I WASNT A GOOD MAN... WHEN PEOPLE THREATEN TO TAKE YOU OUT OF MY LIFE JUST KNOW I LOVE YOU."

The rapper, who is also running for US president, has since deleted the message.