A 64-year-old D.C. man was sentenced to 25 years in prison Friday for fatally stabbing his ex-girlfriend with a screwdriver.

       Robert Dean was convicted last year of second-degree murder while armed in the March 2018 slaying of his former girlfriend, 38-year-old Tamiya White.

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       According to prosecutors, Dean stabbed White in the neck in the parking lot of her apartment building in the 1000 block of Mount Oliver Road NE, near Gallaudet University. Authorities said White then drove herself to a nearby McDonalds to seek help; her two children were in her apartment at the time.

       White was taken to the hospital, where she died. Dean was arrested days later and has been detained at the D.C. jail.

       D.C. Superior Court Judge Marisa J. Demeo imposed the sentence.