A New Jersey man was convicted Friday of killing four relatives in what prosecutors said was a murder and arson plot spawned by a soured business relationship between the man and his younger brother.

A New Jersey jury found Paul Caneiro guilty of murdering his brother and his brother's family before setting their house on fire.

Mansion Fire Deaths FILE - Paul Caneiro appears for his arraignment in the murders of his brother and his brother's family, before Judge Joseph W. Oxley at the Monmouth County Courthouse in Freehold, ...