BELLEROSE, Queens (WABC) -- A manhunt is underway after investigators say a suspect set an older couple on fire inside their Queens home on Monday afternoon.

Officials responded to reports of a fire on 254th Street in the Bellerose section before 3:30 p.m. where they found a 77-year-old man and a 78-year-old woman dead.

Police say the man was found tied to a pole in the basement and the woman was found on the first floor.

Both victims appear to have been set on fire, but the medical examiner will determine their cause of death.

Video of the suspect was recovered from neighbors' security cameras.

Detectives believe the suspect spent five hours in the victims' home, likely searching for property to steal before setting it ablaze.

Neighbors reported an unknown man knocking on doors,

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