Former San Antonio police officer charged with shooting 17-year-old at McDonald's parking lot .

CNN) The former San Antonio police officer who was charged and arrested Tuesday in the shooting of an unarmed 17-year-old at a McDonald's parking lot was released early Wednesday on bond, according to the Bexar County Sheriff's Office.

James Brennand turned himself in Tuesday night on two charges of aggravated assault by a public servant. He was released at 4:03 a.m. CT after posting $100,000 bond for each count, the sheriff's office said.

The October 2 shooting, which left teenager Erik Cantu in critical condition, was a "failure for one individual police officer," the San Antonio police chief said Tuesday. He has since been fired.