The 69-year-old Shannon was unable to escape the flames that consumed the West Caldwell home where he lived with his elderly mother Tuesday.
West Caldwell fire chief Charlie Holden says the three-alarm fire was called in just before 9 a.m. and was brought under control within an hour.
Shannon became an official scorer for the American League in 1979 and the National League one year later. In recent seasons, he was the senior official scorer for games of the New York Yankees and Mets. He also has contributed stories to The Associated Press.