John Dunbar

A third person, and brother of one of the men already arrested, was booked Wednesday night in the June fatal shooting of a man on East Polk Street, Baton Rouge police said.

John Dunbar, 24, is accused in the June 29 killing of 37-year-old Donald Wayne Ely.

Police have said the slaying grew from vengeance over a 2008 killing that was deemed self-defense.

Willie Dunbar, 27, was arrested Monday. Police said he and John Dunbar, who are brothers, both fired multiple shots at Ely outside of the Thomas Grocery on the corner of East Polk Street and Thomas H. Delpit Drive. Ely was pronounced dead at the scene. 

Deldridge Wilson, 45, was also arrested Monday. He is accused of being the getaway driver in the incident. 

Police said the June shooting was spurred by the 2008 fatal shooting of 18-year-old Henry Nicholas Sterling. Ely shot and killed Sterling during an argument Dec. 8, 2008, according to the arrest report for Willie Dunbar, 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 the arrest reports.

John Dunbar, 4625 Earl Gros Ave., was booked into East Baton Rouge Parish Prison on a count of second-degree murder.