Gunfire rang out Wednesday evening at a gas station in Metairie.
JPSO confirms one victim suffered critical injuries in the shooting.
Captain Jason Rivarde says they also made an apprehension.
"One in custody, victim in critical condition at a local hospital."
He says it happened near the intersection of West Napoleon Avenue and Causeway Blvd.
Witnesses say an innocent bystander was also hit by gunfire after an argument escalated to a shooting.