Jesse James Warren, 63, is accused of opening fire at a Penske truck rental facility in Kennesaw in 2010.
Cobb Superior Court Judge Mary Staley set the trial date of May 28 and anticipates it will last approximately four weeks, according to staff.
During a hearing Monday before Staley, Cobb Assistant District Attorney Jesse Evans said Warren’s defense attorneys filed two special notices: a plea of incompetency and a second plea of insanity.
Officially filing the notices will allow the state and court system to schedule an evaluation of Warren’s competency.
Evans said it took more than three years to bring the case to trial because the defense has filed more than 100 motions that are routinely submitted when dealing with a death penalty case.
Warren is accused of shooting to death Van Springer, Jaider Felipe Marulanda and Robert Gonzalez on Jan. 12, 2010, at the Penske truck rental facility north of Town Center at Cobb mall where he once worked.
He is also accused of shooting and inuring Joshua Holbrook and Zacharia Werner.
Warren pled not guilty in spring 2010 to 16 counts, including three counts each of malice murder, felony murder and aggravated assault, two counts of aggravated battery and five counts of possession of a firearm during the commission of a crime.
After the shootings, Cobb Police said a witness called 911 around 1:30 p.m. that day, giving a description of Warren’s car while police scoured the area looking for him.
Warren was eventually arrested near Interstate 20 about 30 miles west of Austell and 30 miles east of the Alabama border.
Police described him as a “disgruntled ex-employee,” and said he was dressed in camouflage and armed with a handgun during the shooting.
Warren allegedly confronted someone in the parking lot and then went into the rental truck facility through the ground level and continued shooting throughout the main floor and truck bay area.
Four of the victims – Springer, Gonzalez, Holbrook and Werner – were Penske employees, and Marulanda was a customer.