Shawcross ( also known as the Genesee River Killer ) was convicted of 11 murders in November 1990 .
Arthur Shawcross , an American serial killer from Rochester , New York , had also practiced necrophilia .
serial killer ( also known as the serial killer     ) was convicted of 11 murders in November 1990 .
Arthur Shawcross , an American serial killer from Rochester , New York , had also practiced necrophilia .