Douglas County prosecutors Wednesday charged an 18-year-old Lawrence man with having unlawful voluntary sexual intercourse with a child between the ages of 14 and 16, according to court records.

Lawrence police Tuesday evening arrested the man. Sgt. Matt Sarna, a police spokesman, said a school resource officer was called to assist detectives with the investigation. Julie Boyle, a school district spokeswoman, said the report was “not a school-related matter.”

Sarna said that police were initially called at noon Tuesday to Lawrence Memorial Hospital’s emergency room to investigate a possible sexual assault and that the victim, a 14-year-old Lawrence girl who was not injured, alleged she was assaulted by an 18-year-old acquaintance Monday in central Lawrence.

The suspect was taken into custody at 8:40 p.m. Tuesday at the downtown law enforcement center, 111 E. 11th St., according to jail records. The man was initially arrested on charges of child rape and indecent liberties with a child, but prosecutors filed the lesser charge Wednesday. It also is a felony. Prosecutors accuse the man of having unlawful voluntary sexual intercourse with a child ages 14 to 16.

A judge set the man’s bond at $2,000 cash or surety Wednesday and scheduled his next hearing for Tuesday. The Journal-World generally does not identify sex crime suspects unless they are convicted.