Nick Cannon has announced that his five-month-old son Zen has died after being diagnosed with a brain tumour.

Axar.az reports that the America's Got Talent and Masked Singer US host confirmed the news during The Nick Cannon Show on Tuesday.

He called the episode a "celebration of life" for his late son, who died last weekend.

Cannon recalled the moment he and his partner, model Alyssa Scott, were told that Zen had hydrocephalus - a build-up of fluid in the brain.

Zen underwent surgery, Cannon explained, but suffered "an interesting turn" during Thanksgiving [25 November] and the "process sped up".

Before his son died, Cannon said they took him to the ocean and held his hand for a final time.

"You can't heal until you feel," he told the audience about such loss, drawing loud cheers. While friends, fans and others shared supportive messages online.