On Facebook, just before the attack. This is not something just bouncing around the Internet or social media. It apparently comes directly from the FBI: The woman who helped her husband kill 14 people at a holiday banquet for his county co-workers pledged allegiance to the Islamic State group and its leader on Facebook using an alias, then deleted the messages before the attack, a U.S. law enforcement official said Friday, providing the strongest evidence to date that the rampage may have been a terrorist attack. The remarkable disclosure about the online activities of Tashfeen Malik provided the first significant...
