The FBI is taking the lead in the Boston Marathon bombing case, calling it a “a criminal investigation that is a potential terrorist investigation.” Investigators said they have “active leads” though no suspects, and called on the public to come forward with any pictures or video they have of the scene. Officials said it was unclear whether an injured Saudi man who had been questioned at Brigham Women’s Hospital had any connection to the attack. FBI agents also searched a house in suburban Boston, removing several bags. The bombing killed three people and injured 176, as many as 17 critically.
