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SAN DIEGO – A brush fire broke out on Thursday afternoon on the U.S. side of the border near Tecate due to downed power lines along the border fence, authorities said.

The blaze, dubbed the Border Fire, was burning near Tecate Mission Road, west of the Tecate Port of Entry, according to a tweet from Cal Fire San Diego. Fire crews responded to it around 2:30 p.m. At one point, it was reported to have scorched some 60 acres, but improved mapping through the day led crews to update the acreage to 30 acres.

Just after 4 p.m., Cal Fire said crews had stopped the spread of the fire, and by 7 p.m. the agency reported it was 50% contained.

According to the agency, the power lines were down in Mexico along the border fence and quickly spread to the vegetation on the U.S. side. Evacuation warnings were issued for the surrounding community in Tecate and a temporary evacuation point was established at Potrero Elementary School.

“Firefighters will remain at scene through the evening,” Cal Fire said.

Check back for updates on this developing story.