Sen. Jerry Moran of Kansas has asked the Justice Department to review its past associations with F. Glenn Miller Jr., the man accused of killing three people in Overland Park on April 13.
The request came in a June 20 letter to Attorney General Eric Holder.
Miller, who also is known as F. Glenn Cross Jr., was charged in 1987 with mailing a threatening letter and violating weapons laws. He eventually reached an agreement with prosecutors to plead guilty to reduced charges and to testify against suspected white supremacists in exchange for a shorter recommended sentence.
He served three years in prison.
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Moran’s letter asks Holder and the department to take another look at the plea agreement.
“Americans can only wonder if Frazier Glenn Miller’s alleged 2014 crimes might have been prevented if he had been prosecuted to the fullest extent of the law in 1987,” the letter says.
Moran, a Republican, also asked Holder to review Miller’s possible participation in the federal Witness Security Program following his release from custody in 1990.
Miller has claimed he entered the program, and public records show an F. Glenn Cross received a Social Security number that year.
Outside experts have said that’s consistent with enrollment in the program. Federal authorities have not confirmed Miller’s participation in it.
Moran’s letter asks the department to explain how participants in witness protection are monitored and if any scrutiny continues for defendants who leave the program.
It also asks if authorities were watching Miller’s online activities at any point before the April shootings.
“While a policy review and increased oversight cannot ease the deep pain and loss felt in Johnson County, it may result in an improved judicial system that can prevent violence from striking another community,” Moran said in an email statement.
The Justice Department could not be reached for comment. Holder attended an April memorial service for the shooting victims.
Miller, 73, remains in custody in Johnson County. He is charged with capital murder, first-degree murder, three counts of attempted first-degree murder, aggravated assault and criminal discharge of a firearm in connection with the deaths of William Lewis Corporon, Reat Griffin Underwood and Terri LaManno in April.