The lead singer of Soundgarden and Audioslave, Chris Cornell has passed away at the age of 52.

It has been reported that the rock star died Wednesday night after playing a concert in Detriot with his band, Soundgarden.

A representivite on Cornell’s behalf described his death as “sudden and unexpected”, with no evident cause known at the present time. Cornell’s family are said to be working with the medical examiner to determine the cause of death.

Cornell was also set to perform a large number of dates throughout the month, following his final ever performance at the sold-out gig.

He was well-known for performing the theme song of the 2006 James Bond film, Casino Royale, as well as becoming an important figure in the 90’s grunge scene with Soundgarden.

Before his passing, Cornell posted this tragic tweet via his Twitter page:

Soundgarden broke up in 1997 and Cornell decided to try his hand at a solo career. It was in 2001 when he joined Audioslave and the band relesed three albums in six years.

Audioslave finally called it quits in 2007, however 2012 saw Soundgarden reunite.

Cornell quoted lyrics from Soundgarden’s track By Crooked Steps: ‘ I’m the shape of the hole / Inside your heart’ on his most recent Instagram post.