The shooting happened Saturday night in what deputies describe as a drug deal gone wrong.
The Naples Daily News reports 23-year-old Eric Riley Jr. and 21-year-old Keegan Leon were shot to death at the Meadow Lake Apartments. Collier County deputies arrested 21-year-old Jacob Mislow and his 19-year-old brother Nickolas Mislow a short time later.
A judge on Sunday ordered them each held on a $2 million bond.
The newspaper reports that none of the men involved lived at the apartment complex.
The Mislows are from rural Miami-Dade County. No attorneys were listed on jail records.
Investigators are trying to piece together the details of what led to the shooting.
Source: Associated Press