Kollie is the only person to have been charged in an investigation of the Aug. 4 mass killing along East Fifth Street, a shooting rampage that left 10 people dead, including Betts, 24, of Bellbrook.
Kollie pleaded guilty in November to federal gun charges. He was alleged to have made false statements about drug use in order to buy guns.
Federal investigators have said that there was no evidence that Kollie, 24, took any part in planning Betts’ actions.
Prosecutors had asked a judge to keep Kollie in jail pending his sentencing.
“He is a habitual drug user with a penchant for firearms and a history of deceit and poor judgment,” the U.S. attorney’s office said in a recent filing in federal court. “The magistrate judge rightfully found that no condition or combination of conditions will reasonably assure Kollie’s safety and the safety of the community. This court should find the same.”