PHILADELPHIA (CBS) — Philadelphia Police are looking into a threat against the African American Museum in Philadelphia. Officials say that police received a letter on Thursday afternoon. The letter, which officials say was received around 3:21 p.m., threatens to blow up the African American Museum during the Democratic National Convention. Authorities say that Homeland Security and…

via Police: Letter Threatens To Blow Up Phila. African American Museum During DNC — CBS Philly