Monae Turnage was shot and her body dumped in an alley.
Today, the man charged with being a felon in possession of the rifle used to kill Monae Turnage will go before a judge.
Martinez Armstrong, 21 is said to be the half-brother of one of the teenage suspects involved in the case.
The the two boys were convicted of accidentally shooting Turnage.
13-year old Turnage was shot and killed in March.