Were Nairobi Mall Attackers American?

A U.S. counterterrorism source told The Daily Beast that the FBI is investigating the alleged American participants. While it won’t be known until the siege is over whether Americans were among the gunmen, there is an “increasing fear they were,” the source said. The two-day assault and siege on the upscale Westgate mall is the single biggest attack in Kenya since an al Qaeda cell bombed the U.S. Embassy in Nairobi in 1998, killing more than 200 people.