A federal grand jury is set to begin hearing evidence this month in the scam to steal the Graceland estate from Elvis Presley’s family, sources say. 

Two sources told NBC News they had been summoned to testify before a grand jury in the coming weeks in Memphis, Tennessee. They spoke on the condition of anonymity because the details of the criminal investigation are not public. 

One of the sources who said they were subpoenaed has a connection to the case. The other is close to Lisa Holden,…