DAYTON, Ohio (AP) – A federal judge has upheld a ruling to keep in jail a longtime friend of the Dayton gunman.

Authorities have said there’s no indication that Ethan Kollie knew Connor Betts was planning the Aug. 4 shooting in the Ohio city that killed nine people before police killed him. But they charged him with lying on a federal firearms form while buying a pistol not used in the shooting.

READ MORE: 'Sounded Like A Freight Train': Washington County Residents Say Storm Lasted Just Minutes, But Cleanup Will Go On For Days

RELATED STORIES:

READ MORE: Free Dental Clinic Expects Large Turnout At David L. Lawrence Convention Center

Defense attorney Nick Gounaris has said the charges Kollie faces don’t involve a firearm used in any violent offenses. But investigators said Kollie told them he bought the body armor, a 100-round magazine and a key part of Betts’ gun.

U.S. District Judge Thomas Rose agreed Friday with a magistrate’s August ruling, saying Kollie is “a danger to himself and others.”

MORE NEWS: 6 Tornadoes Tear Through Western Pennsylvania

(Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)