Art. 1293. Service by private person
When the sheriff has not made service within five
days after receipt of the process or when a return
has been made certifying that the sheriff has been
unable to make service, on motion of a party the
court may appoint any person not a party over the
age of majority, and residing within the state, to
make service of process in the same manner as
is required of sheriffs. Service of process made
in this manner must be proved like any other fact
in the case.