Mississippi Code Title 83. Insurance § 83-11-107

An insurer paying a claim under the endorsement or provisions required by Section 83-11-101 or Section 83-11-102 shall be subrogated to the rights of the insured to whom such claim was paid against the person causing such injury, death, or damage to the extent that payment was made, including the proceeds recoverable from the assets of the insolvent insurer. The bringing of an action against the unknown owner or operator, or the conclusion of such an action, shall not constitute a bar to the insured if the identity of the owner or operator who caused the injury or damages complained of becomes known, provided that in any action brought against such owner or operator, the insurance company that has previously made payment as a result of the policyholder's claim against such owner or operator shall be mailed a copy of the summons issued for the defendant or defendants, and that any recovery against such owner or operator shall be paid to the insurance company to the extent that such insurance company paid the named insured in the action brought against such owner or operator, except that such insurance company shall pay its proportionate part of any reasonable costs and expense incurred in connection therewith, including reasonable attorney's fees.