Amsterdam authorities are charging 36-year-old Mark Culbertson with two counts of rape and two counts of criminal sex act after police say he forced two teenage girls to have sex with him.

Investigators say Culbertson forced a 13-year-old and 14-year-old to have sex with him several times between July 2016 and August 2018.

Amsterdam police say he was arrested Friday -- found hiding in a closet at a friend's house on Jay Street.

Culbertson remains in custody at the Montgomery County Jail.