BILLINGS, Mont. -

The mother of a Billings man charged with killing a neighbor over a long-running dispute is charged with lying to investigators and hiding a bullet in her shoe while detectives searched her residence six days after the shooting.

The Billings Gazette reports 66-year-old Darlene Johnson Durand pleaded not guilty to perjury and tampering with evidence during a District Court hearing Monday. District Judge G. Todd Baugh allowed her to remain free without bond.

Durand's son, 43-year-old Patrick Neiss, pleaded not guilty on Aug. 14 to the March 8, 2013, shooting death of his neighbor, Frank "Trey" Greene III.

Neiss has previous federal convictions on drug and weapons charges and was not allowed to possess firearms.

Prosecutors allege Durand lied by saying there had been no weapons at her residence after her son was released from prison in 2008.