Japanese police have arrested a man for allegedly making bomb threats against the US Embassy in Tokyo, and say he is also a possible suspect in death threats against Ambassador Caroline Kennedy. Public broadcaster NHK said today that Tokyo police arrested Mitsuyoshi Kamiya, a resident of the southern island of Okinawa, for allegedly making the bomb threats from a pay phone in downtown Okinawa. It said he also is believed to have threatened to bomb Camp Schwab, a US military base on Okinawa. NHK said police also suspect Kamiya made phone calls threatening to kill Kennedy and the US consul general on Okinawa. Tokyo police said they could not immediately confirm the report. (More Okinawa stories.)