Entertainment Music Lemmy Kilmister Cause of Death Confirmed, Singer Died From Prostate Cancer – Report The legendary rocker also suffered congestive heart failure By Naja Rayne Naja Rayne Naja Rayne is a former writer at PEOPLE. She left PEOPLE in 2016. People Editorial Guidelines Published on January 19, 2016 10:00PM EST Photo: Edd Westmacott/Photoshot/Getty Less than a month after he died, Lemmy Kilmister’s cause of death has been confirmed. According to his death certificate, obtained by TMZ, the lead singer of the heavy metal band Motörhead died from prostate cancer and congestive heart failure. When the musician, who was 70, died in December, it was revealed that he battled an “extremely aggressive” cancer for a short time. A statement from the band’s Facebook page revealed that Kilmister only received the cancer diagnosis two days before he died. While he was unaware of the cancer until recently, TMZ reports Kilmister dealt with significant health issues for a while, which eventually forced him to decrease his alcohol and tobacco intake, after 57 years of smoking. Rock stars and family gathered in Hollywood for a memorial service for Kilmister earlier this month.