Authorities say a Tampa man was using an underground World War II ammunition bunker to grow marijuana.

Police arrested 37-year-old Gustavo Gonzalez on Friday. A week earlier, detectives had raided the 2,000-square-foot bunker and found 66 marijuana plants, as well as equipment needed to grow them. Detectives estimated the value of the plants to be about $231,000.

The bunker, located near the Tampa International Airport, was built by the Army Air Corps, a predecessor of the U.S. Air Force.

Police were tipped off by the power company, which detected unusually high electricity usage.

Gonzalez was charged with possession and manufacture of marijuana and grand theft for allegedly stealing electricity.

He was released Saturday on $40,000 bail.