A Fedex Federal Express Boeing 757-200, registration N776FD performing freight flight FX-1590 from Memphis,TN to Rochester,MN (USA), was descending towards Rochester when the crew received a cargo smoke indication. The aircraft continued for a safe landing on Rochester's runway 13. Attending emergency services found no trace of fire, heat or smoke. Rochester's Fire Department reported there was concern because the aircraft carried a load of Lithium batteries. An extensive inspection of the cargo bay however did not reveal any evidence of fire, heat or smoke. The occurrence aircraft is still on the ground 10 hours after landing.