The Secret Service confirmed on Thursday that it had intercepted a ricin-laced letter sent to President Obama. The letter was similar to the one sent earlier in the week to New York Mayor Michael Bloomberg over his stance on gun control. Secret Service spokesman Edwin Donovan said the letter had been turned over to the FBI and the Joint Terrorism Task Force. Two letters laced with the poisonous toxin were intercepted on their way to the president in April and have been linked back to a Washington man, Matthew Ryan Buquet, who was charged last week.