San Bernardino massacre suspect Syed Rizwan Farook was in touch with people being investigated by the FBI for international terrorism, law enforcement officials said Thursday. An F.B.I. official said it would be premature to call the attack terrorism, but the agency is treating the case as a counterterrorism investigation. Investigators found 12 pipe bombs and thousands of rounds of ammunition in the SUV and apartment of Farook, 28, and his wife, Tashfeen Malik, 27. The suspects were both killed in a shootout with police a few hours after the attack, which left 14 victims dead.