DENVER, Colo. -- The man police said planted a pipe bomb at a Littleton mall was released from prison one week before the incident. A nation-wide manhunt is underway for Earl Albert Moore, 65, who's accused of planting the explosives Wednesday, the anniversary of the Columbine High School shootings. Moore is considered armed and dangerous. The FBI confirmed that he had been serving time in a Georgia prison for a 2005 armed robbery in West Virginia. Moore had been sentenced to 18 years, but was released early on April 13. Authorities said just seven days later, he planted a pipe...