The younger brother of San Francisco 49ers' tight end Vernon has been declared incompetent to stand trial in the slaying of a man visiting the nation's capital from Colorado.
Nineteen-year-old Michael Davis is charged with first-degree murder in the April death of 66-year-old Gary Dederichs.
Police say Dederichs was walking alone in a residential neighborhood when he was struck on the head with a hammer or a similar weapon.
Davis has also been charged in two nonfatal attacks and is suspected in two additional assaults.
All occurred over three days less than a mile from his home.
D.C. Superior Court Judge Robert Morin declared Davis incompetent to stand trial Friday based on a psychiatrist's recommendation.
Davis will be treated at a psychiatric hospital in hopes of restoring his competency.