MONROE - Four area men were charged with sexual assault of a child after a Department of Justice investigation revealed they all had sexual contact with an underage Belleville girl. The four men were charged in Green County Circuit Court last week after Department of Justice investigators obtained records of the victim's Facebook correspondence between October and December of 2014. The records revealed a string of sexually explicit messages and photographs exchanged between the victim and the offenders, as well as plans to schedule liaisons.