La. Civ. Code art. 1805
Current with operative changes from the 2024 Third Special Legislative Session
A party sued on an obligation that would be solidary if it exists may seek to enforce contribution against any solidary co-obligor by making him a third party defendant according to the rules of procedure, whether or not that third party has been initially sued, and whether the party seeking to enforce contribution admits or denies liability on the obligation alleged by plaintiff.
La. C.C. § 1805