Farook's Friend Arrested

The man who bought the assault rifles used by his friend in the San Bernardino massacre was charged Thursday with terrorism-related counts. The FBI arrested Enrique Marquez, 24, on charges of conspiring with Syed Rizwan Farook to commit terrorist attacks in 2011 and 2012 that they never carried out. Marquez was Farook's next-door neighbor and longtime friend who converted to Islam and was radicalized by Farook, federal prosecutors said. Marquez also was charged with illegally purchasing two assault rifles used by Farook and his wife, Tashfeen Malik, to kill 14 people at a holiday gathering of Farook's health department co-workers on Dec. 2. The shooters died hours later in a gunbattle with police.

Marquez had no role in the attack, but prosecutors said the guns and bomb-making materials he bought that the couple planned to detonate linked him to the killings. "While there currently is no evidence that Mr. Marquez participated in the Dec. 2 attack or had advance knowledge of it, his prior purchase of the firearms and ongoing failure to warn authorities about Farook's intent to commit mass murder had fatal consequences," US Attorney Eileen Decker said. President Barack Obama said he was briefed on the investigation Thursday and reiterated the federal government's commitment to find answers to all the unknowns in the case. (More Syed Rizwan Farook stories.)