Family and friends of DeJuan Guillory, a man killed in an officer-involved shooting in July, chant and hold signs during a rally outside the Evangeline Parish Courthouse Wednesday, December 6, 2017, in Ville Platte, La.

A grand jury on Wednesday declined to indict an Evangeline Parish sheriff’s deputy who fatally shot a man during a traffic stop near Mamou on July 5 — a shooting that has raised questions and drawn protests from his family and friends.

District Attorney Trent Brignac told KATC-TV that the grand jury returned a "no true bill" in the case after several hours of deliberation, meaning they did not find sufficient evidence to indict the officer, Holden Lafleur, in the fatal shooting of 27-year-old DeJuan Guillory.

Lafleur shot Guillory on July 6 on Reed Cemetery Road near Mamou after a 4 a.m. traffic stop. Guillory and his girlfriend, Dequince Brown, had been riding an ATV. The reason Lafleur stopped them and the events that followed have not been publicly disclosed.

State Police turned over the results of its investigation to Brignac on Nov. 3. He has called off multiple meetings with the Guillory family to review the results since then. The most recent was scheduled for Monday, but Brignac canceled it, citing his concern that evidence would be released to the public in advance of grand jury proceedings.

Guillory was shot while on the ground following a scuffle with Lafleur, according to a State Police affidavit summarizing interviews with Lafleur and Brown after the shooting. Brown became involved in the fight at some point, the affidavit states, and is charged with attempted murder of a police officer.

Attorney Joe Long, who represented Brown at the time, has said Brown was trying to prevent Lafleur from shooting Guillory. Photos of Guillory’s body his sister, Kiera Guillory, took while at Owen-Thomas Funeral Home show multiple holes in his back and a stitched-up wound near his left nipple.

Brown's attorney in the attempted murder case, Pride Doran, did not return a call on Wednesday. 

It was not immediately clear if and when the State Police investigation findings, including and autopsy report and dashboard camera footage, will be released.

In an interview late Wednesday, Long, who now represents the Guillory family, said he is “disappointed but not surprised” in the lack of indictment.

“The criminal justice system is broken in Evangeline Parish,” Long said, citing a U.S. Depatment of Justice finding one year ago that the Sheriff’s Office and Ville Platte Police Department routinely violate the constitutional rights of citizens by detaining people without probable cause.

Follow Ben Myers on Twitter, @blevimyers.