Sheff, an owner of a home-sales business, was sentenced to two years in prison on Tuesday for defrauding tenants out of more than $200 million.
He sold homes for $2.3 million, and he made them pay rent to his clients, paying them in cash for a period of time after the property sold.
The crimes were committed while Heff Jones was in office as mayor of West Palm Beach, Florida, from 2008 to 2011.
Jones, 64, was charged with 14 counts of wire fraud and five counts of mail fraud.
He pleaded not guilty.
Heff has denied the charges.
He was elected mayor of Palm Beach in 2016.
The case against Heff is being investigated by the U.S. Attorney’s Office for the Eastern District of Florida, according to the Palm Beach Post.
He is scheduled to be sentenced at 2:30 p.m. March 31.