Kanye West and Kim Kardashian’s family has suffered a sudden and unthinkable tragedy

Kim Kardashian, left, and Kanye West arrive at the MTV Video Music Awards at the Microsoft Theater on Sunday, Aug. 30, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

Kanye West is mourning the sudden loss of his cousin’s young son.

Videos by Rare

According to TMZ, the cousin, Ricky Anderson, who works for West’s production company GOOD Music, lost his 1-year-old son on Monday night. The child, Avery, died in his sleep. He had no known illnesses or prior medical conditions.

RELATED: Things took a drastic turn for Steve Harvey after he messed up the results at the 2015 Miss Universe pageant

“Today was the worst day of my life! I lost my lil man and gained an angel! Rest in Paradise!!! I love you man,” Anderson wrote on Instagram.

Avery had reportedly just celebrated his first birthday.

Rest in peace.

What do you think?

Conan realizes he’s been constantly fooled by Ryan Gosling impersonators

Luke Bryan and Jimmy Fallon join forces for a parody that’s sure to go viral