State and local authorities are investigating the death of a person whose body was found aflame Saturday night in a burning cornfield in Hatfield.Mary Carey, spokeswoman for Northwestern District Attorney David E. Sullivan, said the remains were located off Bridge Lane at approximately 9:30 p.m. Saturday by police checking out a report of a fire.“Upon arrival, officers located a deceased human body on fire in a field,” Carey said.No identifying information about the deceased, including gender, was immediately released.