KNOX DALE, Pa. (AP) — Police say a Pennsylvania woman high from smoking methamphetamine has fatally shot her husband after mistaking him for an intruder.

Police say 31-year-old Trista Zickefoose shot her 40-year-old husband, Greg, on Sunday night at their duplex apartment in Knox Township, about 80 miles northeast of Pittsburgh.

Authorities say that the couple had argued after smoking the drug together and that Trista Zickefoose later heard a noise that she believed was from an intruder. Police say she grabbed a 9 mm pistol she kept under her pillow and fired a warning shot.

Police say her husband tried to take the gun away from her, but she shot him in the chest. She remains jailed Tuesday on a charge of criminal homicide.

Court records don’t list an attorney for her.

Copyright 2015 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.