LEWISTON, Idaho -

An Idaho appeals court has upheld the conviction of a Lewiston man who killed his wife on Valentine's Day in 2009.

The Idaho Court of appeals unanimously ruled this week that a lower court did not err during the trial of 42-year-old Gary Mallory.

Mallory is serving 30 years to life for strangling his 48-year-old wife, Charlene Mabie Mallory. He was convicted by a jury of first-degree murder and felony domestic violence.

In their appeal, attorneys for Mallory challenged the trial judge's decision to allow prosecutors to present evidence of rib injuries suffered by the wife before her death.

But the Lewiston Tribune reports a three-judge panel sided with the lower court, finding that testimony about the rib injuries was relevant because the husband was charged with domestic violence.