By Pete Williams, NBC News Justice Correspondent Federal prosecutors today revealed the arrest of a Michigan man who made at least five Molotov cocktails that he planned to throw at the Republican National Convention. He also discussed plans to bomb underground power cables to shut off power to the convention center. The man, 23-year-old Matthew DePalma of Flint, was arrested on Saturday in an apartment in South Minneapolis. FBI investigators say they found three completed Molotov cocktails there. And they say he had spent several weeks building explosives and planning a potential attack. ...( read more ) ...