The blaze the second to break out in the same general vicinity in as many days began spreading for unknown reasons at about 10 a.m. Tuesday near Tecate Creek in Marron Valley, east of Otay Mesa.
Crews worked Wednesday to douse hot spots at the site of a wildfire that burned across swaths of open terrain in the far southern reaches of San Diego County, blackening scores of acres and pushing into Mexico before ground and air crews gained control of the flames.
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