An Oregon man shot his 83 year old wife to death for putting the lid on a ketchup bottle too tightly amongst other grievances; the 86 year old man is standing trial in what prosecutors say was a calculated act.

KGW reports that Deschutes County prosecutor Mary Anderson said Lawrence Loeffler took the phone off the hook, retrieved a .25-caliber handgun in the middle of the night from the bedroom where she slept and then "set a trap" to get his wife onto the deck at the back of their house near La Pine, a town of about 1,670 people on the east edge of the Cascade Range in Central Oregon.

The attack was carried out carried after a series of grievances with his family that prosecutors said included the failure of his stepdaughter to wish him a happy birthday and his complaint that his wife put the lid on the ketchup bottle too tightly.

He shot her once in the neck and then again in the head in what he described to investigators as a "kill shot" to make sure she was dead, Anderson told jurors.

While Lawrence Loeffler admitted having planned to kill his wife, defense attorney Jacques DeKalb said his client was not guilty of murder because he was suffering from delusions.

"He had no idea what reality was at that time," DeKalb told jurors.