La. Civ. Code art. 3419
Current with changes from the 2024 legislative session effective on or before 7/1/2024, from Acts 2,3, 6-535, and 580-647
One who finds a corporeal movable that has been lost is bound to make a diligent effort to locate its owner or possessor and to return the thing to him.
If a diligent effort is made and the owner is not found within three years, the finder acquires ownership.
La. C.C. § 3419