LITTLE ROCK — The mother of a black teenager who was fatally shot by a white Little Rock police officer in 2012 filed a federal lawsuit Monday over the shooting.

LITTLE ROCK — The mother of a black teenager who was fatally shot by a white Little Rock police officer in 2012 filed a federal lawsuit Monday over the shooting.

Sylvia Perkins filed the suit in U.S. District Court in Little Rock against the Little Rock Police Department, former Little Rock Police officer Josh Hastings and former Little Rock Police Chief Stuart Thomas.

A Little Rock Police Department spokeswoman did not immediately return a call Monday afternoon seeking comment. A lawyer who has represented Hastings in the past said he believed the suit would not be successful.

Hastings was fired and charged with manslaughter after he shot and killed Perkins’s son, 15-year-old Bobby Moore III, on Aug. 12, 2012. Two trials ended in hung juries, and prosecutors said they would not try Hastings a third time.

Perkins’ suit alleges that Hastings caused Moore’s death through use of excessive force, in violation of his civil rights, and that "the city, through Thomas and other supervisory officials, consciously disregarded the high risk that Hastings would commit excessive force upon an African-American Little Rock citizen, such as Bobby."

The suit alleges that Hastings was investigating reports of car break-ins at a Little Rock apartment complex when he fired into a vehicle that was backing away from him, killing Moore.

Hastings told investigators the vehicle was traveling toward him when he fired at it, in fear that it would hit him, but investigators concluded that the incident did not occur the way Hastings said it did. Hastings’ attorney argued during the trials that there was conflicting testimony about the direction in which the vehicle was traveling.

The suit also alleges that the Thomas, now retired, knew when he hired Hastings — the son of former Little Rock police Capt. Terry Hastings, also now retired — that the younger Hastings had attended a Ku Klux Klan meeting while a junior in high school.

The suit lists several incidents in which Josh Hastings allegedly violated police policies, including failing to submit reports, providing false information in a report, missing court dates, sleeping on the job, causing a vehicle accident and failing to document his use of force. Reports show that Moore’s use of force most often was against blacks, according to the suit.

Little Rock lawyer Bill James, who represented Hastings in his two criminal trials, said Monday he did not yet know whether he would represent Hastings in the civil case, but he said he expected the suit to fail.

"You couldn’t get 12 people to agree that he was negligent," James said.

He acknowledged that the standard of proof is lower in a civil trial than in a criminal trial, but he said that if the civil case were to go to trial, the jury likely would hear evidence that the defense was not allowed to present during the criminal trials to establish more firmly that Hastings acted reasonably under the circumstances.

James also said Hastings did not plan to attend the KKK meeting but was "riding four-wheelers with a buddy and came across the meeting somewhere."

The suit emphasizes the KKK meeting and disciplinary actions against Hastings because "they ain’t got a case otherwise," he said.