It has been reported by his brother on Twitter that Duffy suffered a brain injury after falling, and as a result of that injury, he died as a result of his injuries.
The keyboardist for Primal Scream, Bobby Gillespie, died in a house in Brighton, according to the band's lead vocalist.
Having previously backed Primal Scream unofficially, Duffy joined the band full-time after its split in 1991, contributing keys to the epochal 1991 album Screamadelica.
Primal Scream's lead singer, Gillespie, whose friendship with Duffy dates back as far as he was a teenager in Felt, posted a lengthy tribute to his late bandmate.
I think it is safe to say that Martin was a very special person, explained Gillespie. "He had a deep spiritual understanding and love of music that was unparalleled.