Japanese and U.S. authorities are investigating death threats against U.S. Ambassador Caroline Kennedy and Alfred Magleby, the U.S. consul general in Okinawa.
The U.S. Embassy in Tokyo received the telephone threats last month, the newspaper Yomiuri Shimbun reports, and they were made by an English-speaking man. State Department spokeswoman Jen Psaki did not confirm any specific threats, but said in a statement: "We take any threats to U.S. diplomats seriously. We are working with the Japanese government to ensure the necessary measures are in place." The warnings come two weeks after Mark Lippert, the U.S. ambassador to South Korea, was attacked by a man with a knife during an event in Seoul.