Eighteen-year-old Shareef Clemons pleaded guilty Monday in the assault on 15-year-old Kierra Johnson in March 2008. He faces six to 12 years in prison when he's sentenced in July on charges including rape and involuntary deviate sexual intercourse.
Prosecutors say Clemons and another teen skipped school with Johnson, then encouraged her to drink excessively and took turns raping her after she passed out.
Johnson's partially clothed body was discovered the next day. Investigators say the girl's blood-alcohol level was .433.
Juan Williams, who was 17 at the time of the attack, pleaded guilty in February. He will be sentenced May 4.
