D.C. police closed a 1990 homicide case Thursday.
Frederick Morton, 57, was charged with first-degree murder. He already was in custody at D.C. Jail on an unrelated charge.
Police accused Morton in the stabbing of Charles Caldwell Haupt on 35th Street in Georgetown on March 28, 1990. Haupt, 62, was found suffering from stabbing wounds in his home that afternoon. He was later pronounced dead at a hospital.
Morton's driver's license was found at the scene, but he showed investigators a police report indicating he lost his wallet and driver's license two weeks before, and he was released.
Another cold case led investigators back to Morton, News4's Jackie Bensen reported. He was arrested in November in connection with the 1997 death of Sharon Moskowitz in Kalorama and charged with first-degree murder. Investigators believe Moskowitz, 25, walked in on a burglary.
After enhanced surveillance video of someone who had used Moskowitz's credit card was released in October, police received a tip that led to Morton.
After his November arrest, police learned Morton had been a suspect in the Haupt homicide and they reopened that case.