A Baton Rouge man was arrested Monday in the June fatal shooting of man, a killing that Baton Rouge police believe grew from vengeance over a 2008 killing that was deemed self-defense. 

Willie Tyrone Dunbar, 27, is accused in the June 29 killing of 37-year-old Donald Wayne Ely.

A second man, 45-year-old Deldridge Wilson, was also arrested Monday, accused of being Dunbar's getaway driver in the incident, according to Sgt. Don Coppola, a Baton Rouge police spokesman.

Dunbar killed Ely to get back at him over the 2008 fatal shooting of 18-year-old Henry Nicholas Sterling, according to Dunbar's arrest report. Ely shot and killed Sterling during an argument Dec. 8, 2008, the report says, but Ely was not charged in Sterling's death after investigators determined the shooting was done in self-defense.

“Family and friends of Sterling's did not agree with the conclusion and, therefore, vowed vengeance for his death,” an investigator wrote in Dunbar’s arrest report.

Police said Dunbar and another man, who was not identified, looked for Ely and found him around 9 p.m. June 29 outside of the Thomas Grocery on the corner of East Polk Street and Thomas H. Delpit Drive. Both Dunbar and the second man fired multiple shots at Ely, who was pronounced dead at the scene.

The name of the second assailant has not been released.  Coppola said that person has not been arrested.

Wilson is accused of driving the two shooters away from the scene. Coppola said they are unsure how much Wilson was involved in the revenge shooting beyond the transportation.

Sterling was shot multiple times just before midnight on Dec. 8, 2008, and died near the corner of East McKinley and Tennessee streets, less than half a mile from where Ely was killed.

After receiving a tip that Dunbar was connected to Ely’s death, police located him. They searched his girlfriend's apartment on Monday, according to his arrest report, and found a stolen handgun. The girlfriend, who is not identified in the report, said the gun wasn’t hers and that she didn’t know anything about it.

Dunbar told police that a man gave him the gun, which police said was stolen March 1, 2017, from an Alvin Dark Avenue home that is one block from Dunbar’s apartment. Coppola could not say if that gun was suspected as the weapon used in Ely’s death.

Dunbar, of 4625 Earl Gros Ave., was booked into Parish Prison on counts of second-degree murder, possession of a firearm by a convicted felon, and possession of a stolen firearm.

Wilson, 2060 Goudchaux St., was booked into Parish Prison on a count of principal to second-degree murder. 

Follow Emma Discher on Twitter, @EmmaDischer.