Charleston County Chief Deputy Mitch Lucas says 23-year-old Darnell Lafayette was arrested Tuesday.
Lucas says deputies are still trying to figure out exactly what led to the shooting. But it appears Lafayette got into an argument with 21-year-old Tyrone Moore Jr. early Saturday morning outside the Lake House Club south of Charleston.
Investigators say Lafayette walked up to Moore and fired three times, with two of the bullets striking the victim.
Lafayette is in jail. It wasn't known if he has a lawyer.