Firefighters are responding to a brush fire flare-up Friday afternoon in Fullerton, near the site of a brush fire that scorched a canyon hillside earlier this week.
According to Fullerton Fire Department Deputy Chief Julie Kunze, five fire units arrived at the blaze near Castlewood and Coyote Hills Drive just after 1 p.m.
Ten more were being dispatched, along with a helicopter to fight the flames from above.
A fire in the same area Tuesday forced the evacuations of nearby homes and burned 80 acres.
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At least one man has been arrested on suspicion of having started the earlier fire.
This is a developing story. Refresh for updates.