LAKE CHARLES, La. - A unanimous Louisiana Third Circuit Court of Appeal panel on April 9 issued an order granting rehearing and modifying a Feb. 5 opinion that affirmed in part awards of past-due natural gas royalties to royalty interest owners; on rehearing, the panel modified the calculation of the interest on the judgment and expressed remand because a necessary party was not included in the underlying litigation (Jerry J. Suire, et al. v. Oleum Operating Co., No. 13-736, La. App. 3rd Cir.).