Former MEGADETH drummer Nick Menza's death was reportedly not drug-related.
The rocker was performing with his band OHM at Studio City, Los Angeles' The Baked Potato jazz club on Saturday (21May16) when he collapsed on stage three songs into their set.
Paramedics attempted to treat him, but the percussionist was pronounced dead after he was admitted to a nearby hospital. His manager Robert Bolger told the BBC he had suffered a "massive heart attack".
According to editors at TMZ.com, police officers investigating Menza's death have ruled out drug use as its possible cause after conducting a search on the jazz club, reviewing autopsy results and interviewing those close to the late musician, concluding that he had no recent history of drug use.
The autopsy results reportedly revealed the rocker had been suffering from heart disease.
The gossip site claim sources who knew Menza say that he had been completely sober for 8 years.
He drummed for MEGADETH between 1989 and 1998, when the influential thrash metal group were at the height of their commercial popularity.
Menza rejoined the band and departed again in 2004, drumming with a number of bands before joining up with fellow Megadeth alumni Chris Poland in OHM last year (15).
In an interview with U.S. podcast The Wave Northwest given two weeks before his death, the rocker revealed that he missed performing major gigs with his old band.
"I miss it," he said. "I miss the playing part of it, very much so, in front of the big crowds and just rocking people and having people come up afterwards. That's the only part of it I miss."