Reports of dwindling US weapons stocks have triggered an unusually sweeping hunt for leakers inside the Pentagon.

The Federal Bureau of Investigation (FBI) has found itself embroiled in a rather odd situation involving polygraph tests. In April, it confirmed to NPR that it was using these tests to catch personnel who were potentially leaking information to the press.

The aggressive effort comes in the wake of news reports about the military’s diminished stocks of crucial munitions as the U.S. fights Iran.