SAVANNAH, Ga. - Georgia ports officials say a blaze that tore through a warehouse and sent plumes of black smoke into the sky has been extinguished.

Ports officials say the blaze, which was reported Saturday, was extinguished Sunday morning. Savannah Fire and Emergency Services spokesman Mark Keller says firefighters worked overnight to prevent flare ups from developing into larger fires inside the damaged 226,000 square-foot warehouse.

Port officials have said no injuries were reported and no one was in the warehouse when the fire started. The cause of the blaze is unclear and Keller says investigators haven't been able to enter the building yet.

Keller says although air conditions are improving near the warehouse, officials are still urging people to limit outdoor activities nearby to avoid exposure to lingering smoke.