A U.S. military judge has rules that the Army psychiatrist charged in a 2009 shooting rampage must shave his beard before his trial or be forcibly shaved.
The judge said Major Nidal Hasan had failed to prove genuine religious reasons for the beard, which contravenes Army regulations.
Hasan argued he had grown it in compliance with his Muslim faith.
In November 2009, the 41-year-old army psychiatrist opened fire on soldiers at Fort Hood, Texas, killing 13 of them and wounding dozens more.
Hasan is charged with 13 counts of premeditated murder and 32 counts of attempted premeditated murder.
He faces possible execution if convicted.
Hasan reportedly has offered to plead guilty on several occasions.
Fort Hood lies outside of Killeen, Texas, and entails among the largest concentrations of U.S. military personnel in the world.
Based on reporting by AP and BBC