A New York City man with a history of committing violent crimes is suspected of killing an elderly couple in Queens before setting their house on fire, police said. A manhunt was underway Wednesday morning for Jamel McGriff, who is wanted in the deaths of Frank Olton, 76, and his wife, Maureen Olton, 77. Authorities said McGriff went to the couple’s home on Monday morning, claiming that his cell phone battery was dead and he needed a place to charge it. Video showed McGriff t

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