More charges have been added to the list for a former substitute teacher arrested in May on various sex crimes and drug allegations.

Richard Gene Martin, 73, was previously charged on May 10 with indecent liberties with children by a school official, indecent liberties with children, statutory rape/sex offense of a person 13-15 years of age by defendant 6 years older, and contributing to the delinquency and neglect by parents/other.

On May 20, Martin received additional charges including one count of first-degree rape and two additional counts of indecent liberties.

On July 28, more charges were added including two counts of indecent liberties with children by a school official and Secret peeping into a room occupied by a female.

His bond is currently set at over $2 million and his next court date is Aug. 30.

In all, Martin now faces 20 charges: