▶ Attackers posted ISIL support vow

Federal authorities believe the Facebook posting from one of the attackers who killed 14 people in San Bernardino, Calif., last week was made on behalf of both shooters. The Facebook posting said, “We pledge allegiance” to the leader of the Islamic State in Iraq and the Levant, using the name Khalifah Abu Bakr al-Baghdadi Al Qurashi, the emir of selfproclaimed ISIL. This new detail illustrates what federal officials described Monday as the radicalization of both attackers. The FBI remains interested in a former neighbour who provided the military-grade rifles used by Syed Rizwan Farook, the 28-year-old county health inspector, and his wife, Tashfeen Malik, 29, during the massacre that killed 14 people and injured 21 others.