Police have arrested a third teenager in the Tuesday attack on an 83-year-old Pinellas Park man.
Jazmine Burney, 15, of St. Petersburg turned herself in to police late Thursday and was arrested on a charge of armed robbery with a deadly weapon. Antonio Peterson, 16, of St. Petersburg faces the same charge.
Police said they think Peterson's 13-year-old brother was also involved in the incident at 10 a.m. Tuesday that left Charles Clark badly beaten and with three stab wounds on his arm.
The younger brother has denied being involved in the attack and admitted only to helping steal Clark's Ford Fusion later that night, police said.
He was arrested on a charge of grand theft of a motor vehicle. The Times is withholding his name because of his age.
Police said they are continuing to investigate the incident and expect more charges for all three teens.
Burney made headlines in 2012 when she fought off two men who tried to grab her as she got off a bus in St. Petersburg.
She has outstanding warrants for failure to appear for detention on a charge of driving without a valid license and failure to appear for detention on a charge of grand theft of a motor vehicle, Pinellas Park police spokesman Sgt. Adam Geissenberger said. Both charges are from March.
In 2013, Peterson was on probation for a theft charge, Geissenberger said.