A representative for the musician confirmed the news to entertainment magazine Rolling Stone on December 27 but the cause of death is unknown.
According to reports, the musician was found unresponsive in a vehicle in the United States on Tuesday.
The artist - who went by his stage name Jo Mersa - had reportedly suffered from asthma his entire life, and the Florida radio station WZPP claimed he died of an asthma attack.
He is the grandson of iconic reggae musician Bob Marley and the son of Stephen Marley.
Bob tragically died of cancer in 1981 at the age of 36, and is widely considered one of the pioneers of reggae music.


John Malkovich, Mathilde Arcel win top actors' awards at Venice
Warner Bros. World Abu Dhabi brings Superman and Lex Luthor to Comic Con
Canada's former PM Trudeau launches production company
AI-powered documentary tests cinema's boundaries in Venice
Cruz and Bardem star in Venice drama about power and isolation
Family of slain 14-year-old girl sues pop vocalist D4vd