TBILISI (AFP) - Two anti-tank mines were found Sunday at a presidential residence in the western Georgian city of Zugdidi, near the rebel region of Abkhazia, the interior ministry said. "Two anti-tank mines were found at the presidential residence in Zugdidi. Specialists are working to disarm and dismantle these explosive devices," interior ministry spokesman Shota Utiashvili told AFP. He had no more details regarding the incident, he added. A spokesman for President Mikheil Saakashvili also said he had no details of the incident. Tensions remain high near Georgia's rebel regions following a war in August between Russia and Georgia over another breakaway province, South Ossetia. Two people, including a local mayor, were killed Saturday when an explosive device was set off in the village of Muzhava on the border with Abkhazia. Police said they suspected Abkhaz rebels were behind the attack. Russian forces moved into Georgia on August 8 to repel a Georgian military attempt to retake South Ossetia. Under a European Union-brokered ceasefire, Russian forces later withdrew to within the two rebel regions, which Moscow recognised as independent states.