FARMINGTON -- A prosecutor said a man who has been held in Davis County Jail is being investigated by the FBI for using other people's identification while being incarcerated.
Michael Rivera, 31, appeared in 2nd District Court on Monday. He is charged with aggravated assault and aggravated robbery, both first-degree felonies.
The charges stem from a botched robbery and shooting of Anmol Ratton in his driveway in Clearfield. Rivera has been held in Davis County Jail in lieu of $100,000 bail since his arrest Dec. 17, 2009, on the robbery charges.
Deputy Davis County Attorney Steve Major said the U.S. Attorney's Office is reviewing the FBI case and could file charges before the end of May in U.S. District Court.
"Michael Rivera and others are being investigated for using other people's ID while he has been in jail," Major said.
A hearing to review the Clearfield case is set for July 9.
Rivera was one of three brothers charged in the Clearfield case. The other two, Ramon Rivera and Daniel Rivera, are serving prison sentences for the Clearfield robbery and for other charges.
Ramon Rivera, now 26, is serving five years to life in prison on one count of attempted murder, a first-degree felony. That charge was from the Clearfield 2009 shooting.
He also is serving 57 years on federal charges for three counts of robbery, possession of a firearm by a convicted felon, possession of a firearm with an obliterated serial number and three counts of brandishing a firearm during a crime of violence.
Those charges stem from other 2009 robberies in Davis County.
The third brother, Daniel Rivera, 32, is serving a sentence of up to five years in prison for third-degree felony escape from official custody. That charge stems from when he left Weber County Jail on Aug. 4 while serving sentences on the Clearfield case and on a charge out of Weber County.
Daniel Rivera had pleaded guilty March 31, 2011, to wrongful appropriation and reckless endangerment, both class A misdemeanors, in connection with the Clearfield shooting.
He then failed to show up for his sentencing hearing in May 2011.
Daniel Rivera is considered a person of interest in the disappearance of Victor Flores, 25, of California.
Flores' body was found buried in the yard of Sarah Nichole Munn, of Roy. Police said Munn is a girlfriend of Daniel Rivera. Police said Daniel Rivera rented a tractor and dug a hole in Munn's yard in May 2011.
Munn has been charged with second-degree felony obstruction of justice in 2nd District Court in Ogden. A court hearing is set for Munn on July 10.