A veteran GBI agent calls it the worst police shooting he's ever investigated.

Two Glynn County police officers shot and killed Caroline Small in June 2010 after a low-speed chase that ended on a suburban Brunswick street. Small, a 35-year-old mother of two, was unarmed.

Police said they shot Small because they feared for their lives. A grand jury in 2011 cleared the officers of wrongdoing, but an Atlanta Journal-Constitution/Channel 2 Action News investigation found glaring irregularities in how her case was handled.

Read the AJC's full investigation on myAJC.com and in Sunday's Atlanta Journal-Constitution. Find coverage of the AJC's special reporting on police shootings in Georgia on myAJC.com, Over the Line.