(East St. Louis, IL) — An East St. Louis teenager is pleading not guilty to charges he sexually assaulted a young girl. Authorities say 19-year-old Touncho Wallace is charged with predatory criminal sexual assault of a child as well as aggravated sexual abuse for an attack on a 12-year-old last month. Wallace remains in the St. Clair County Jail on 300-thousand-dollars bail.