Cars torched outside U.S. consulate in Tijuana

The Federal Bureau of Investigation and Mexican authorities are investigating who started a fire outside the U.S. consulate in Tijuana that destroyed four cars, a U.S. official said on Friday.

The U.S. consulate in Tijuana, located across the border from San Diego, is one of the busiest in Mexico. A U.S. consulate worker in the border city of Juarez was killed by drug gang gunmen in 2010.