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CHARLESTON, S.C. (AP) - A former Special Olympics volunteer coach has been sentenced to more than 15 years in prison for having sex with a 15-year-old athlete.

Cornelius Davis of Hopkins pleaded guilty in Charleston on Tuesday. He had been charged with criminal sexual conduct with a minor and two counts of assault and battery in Lexington and Richland counties.

Davis apologized to the victim as part of the plea. He also apologized to his own family.

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Mount Pleasant police said Davis had been with the girl at least twice. He was accused of having sex with the teen at a hotel during the 2012 Special Olympics Winter Games.

Davis was a special education teaching assistant at Brookland-Cayce High School.