When Graham took the keys and left, police say the woman's 20-year-old son followed and tried to stop him. That's when police say Graham pulled a knife, stabbed the son in the chest and then fled in the car.
Police say the woman's son is being treated at Beebe Medical Center for life-threatening injuries.
Graham was arrested in Longneck and charged with four offenses including attempted murder and drunken driving and taken to Sussex Correctional Institution. Police say no bond was set because Graham was intoxicated.
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Information from: The (Wilmington, Del.) News Journal, http://www.delawareonline.com