La. Code Civ. Proc. art. 1092

A third person claiming ownership of, or a mortgage or privilege on, property seized may assert his claim by intervention. If the third person asserts ownership of the seized property, the intervention may be filed at any time prior to the judicial sale of the seized property, and the court may grant him injunctive relief to prevent such sale before an adjudication of his claim of ownership.

If the third person claims a mortgage or privilege on the entire property seized, whether superior or inferior to that of the seizing creditor, the intervention may be filed at any time prior to the distribution by the sheriff of the proceeds of the sale of the seized property, and the court shall order the sheriff to hold such proceeds subject to its further orders. When the intervener claims such a mortgage or privilege only on part of the property seized, and the intervention is filed prior to the judicial sale, the court may order the separate sale of the property on which the intervener claims a mortgage or privilege; or if a separate sale thereof is not feasible or necessary, or the intervener has no right thereto, the court may order the separate appraisement of the entire property seized and of the part thereof on which the intervener claims a mortgage or privilege.

An intervener claiming the proceeds of a judicial sale does not thereby admit judicially the validity, nor is he estopped from asserting the invalidity, of the claim of the seizing creditor.