NEW YORK – A New York City couple in their 70s was killed Monday in what the police commissioner said was a “horrific double homicide, robbery and arson" — the man tied to a pole and stabbed, the woman’s body severely burned as their home went up in flames.

Frank Olton, 76, and Maureen Olton, 77, were found dead around 3:30 p.m. Monday, about 20 minutes after surveillance video showed suspect Jamel McGriff walking near their Queens home. The couple's son, a fire department EMT, called 911 after being alerted to the fire by the couple's alarm monitoring service. A fire marshal ruled that the fire was intentionally set.

McGriff, 42, remained at large as of Tuesday afternoon, police Commissioner Jessica Tisch said. He was last seen on video earlier Tuesday pawning two cellphones in the Bro

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