Robin Gibb’s son, Robin-John Gibb, has spoken out to clarify that his Bee Gee father did not die of cancer, as many media outlets have reported. Instead, he died of kidney failure.

While R-J described his father’s passing as “peaceful and dignified” to The Express, he also shared that 14 relatives and friends kept a close vigil on the singer, 62, as he neared death.

“It wasn’t the cancer that killed my father; those reports are wrong,” the grief-stricken son said, revealing that other complications claimed Gibb’s life. “Dad had actually gone into remission and the cancer was completely unrecognizable, it was too small to detect. No scan could see it. He actually died of kidney failure.”

He continued, “Basically my father died of kidney and liver failure. It was a really sudden downturn.”

R-J shared that his father was watching DVDs when he had a seizure, which ended up contributing to the rapid downturn. “He was then dosed with sedatives to deal with the side effects of his chemotherapy and his liver just couldn’t process them,” he said.

The official statement regarding Gibb’s death did mention his cancer, which is likely why media reports ran with the idea that he passed away from that condition.

He also shared that his father fought for his life, telling his family to try any means necessary, “no matter how futile it may seem,” to help him stay alive. (Absolutely no pun intended there.)

A memorial service is set for St. Paul’s Cathedral in September.

R.I.P., Robin.

Watch Robin Gibb Perform ‘I’ve Got to Get a Message to You’