TUCSON, Ariz (Reuters) - A wildfire blazing across the Arizona-Mexico border has injured two firefighters, authorities said.

The blaze has torched at least 4,500 acres of land on both sides of the border, about five miles west of the city of Nogales, the Coronado National Forest said in a news release late on Friday.

Two firefighters injured battling the blaze received treatment in hospital on Friday. One was later released, the other remained under care for non-life-threatening second-degree burns.

(Reporting by Tim Gaynor; Editing by Greg McCune)