One of two men accused of killing a man and his 7-month-old son during a drive-by shooting last year in Algiers was sentenced to spend four decades in prison for his role in the crime.

Isaac Pierre, 21, pleaded guilty Friday to two counts of conspiracy to commit first-degree murder.

He and Kevin Thomas, 24, were arrested Dec. 5, 2013 on suspicion of killing 7-month-old Deshawn Kinard and 25-year-old Deshawn Butler, the infant’s father and the intended target of a shower of bullets rained on their car during a drive-by shooting Nov. 13, 2013, in Algiers.

New Orleans police have said the shooting was born of a simmering feud between two Algiers gangs: the Fischer Fools, of which Butler was a member, and Hot Blocks.

While police have declined to discuss why Butler was targeted, their application for arrest warrants for the two men indicated Butler’s slaying was another example of street justice, saying he reportedly had fired at the suspects hours before they allegedly killed him.

Butler died in his girlfriend’s car after the shooting. Deshawn died a short time later at Interim LSU Hospital of a gunshot wound to the head.

According to police, Butler himself had shot at Thomas, 23, and Pierre, 20, as well as two other men the same day he was killed.

Pierre was initially booked on two counts of first-degree murder and two counts of conspiracy to commit first-degree murder. He pleaded guilty to the latter charges as part of a plea agreement.

He was sentenced to 30 years on one count and 10 years on the other, with the sentences to run consecutively.

The charges against Thomas, who was arrested on two counts of first-degree murder, remain pending.