The Capitol Police are investigating a telephone threat against Sen. Arlen Specter (D-Pa.), according to the Associated Press.Mandan (N.D.) Deputy Chief Paul Leingang told the AP that his police department interviewed a local man on Tuesday at the request of the Capitol Police.According to Leingang, the man left a message saying he would travel to Washington to assassinate the Senator, but in the course of his interview said he was under the influence of alcohol and did something “stupid.— The Mandan police have finished their role in the investigation, leaving it in the hands of the Capitol Police.