The star's spokeswoman, Helen Kensick, said Friday that Jones was at his stable with family members before his sudden death on Wednesday.
Autopsy results show that Jones died of a heart attack. The medical examiner's office in Martin County, Fla. said toxicology tests could take another six or eight weeks, but there's no sign anything else is to blame for the 66-year-old's death.
Jones rocketed to stardom in the 1960s as a member of The Monkees, a made-for-TV rock band patterned after the Beatles. Though their televisioin show lasted just two years and the group ultimately broke up, they have endured with such chart-topping hits as "I'm a Believer" and "Daydream Believer."
Kensick said a private funeral will be held in Florida. Public services in Jones' honor are planned for New York and England, though details have not been finalized.
The Associated Press contributed to this report.
