HACKENSACK - Staff and patients at a hospital in Bergen County are mourning the loss of a surgeon and friend who was killed in a plane crash on Sunday.

Dr. Viswanathan Rajaraman and his wife, Dr. Mary Sundarum, crashed in a cornfield near Rickenbacker International Airport in Ohio while en route to New Jersey in their single-engine Cessna.

Federal investigators are still trying to determine what caused the small plane to go down.