MORRIS COUNTY — Morris County Prosecutor Robert J. Carroll, Chief of Detectives Christoph Kimker, and Jefferson Township Chief of Police Paul Castimore announce that Kelvin Briggs, 64, formerly of Nevada, has been sentenced to 24 years in New Jersey State Prison. On September 1, 2021, a Morris County jury returned a verdict finding Briggs guilty of multiple offenses including Endangering the Welfare of a Child (production of sexually explicit images and video of a child engaged in a sexual act), Sexual Assault, Endangering the Welfare of a Child (distribution of sexually explicit images of a c…