Turkish-backed fighters take part in a training on on March 6 north of the Syrian town of Manbij , where four Americans were killed in a suicide bombing in January. (Bakr Alkasem/AFP/Getty Images)
By Missy Ryan
U.S. officials have questioned suspected Islamic State militants who Syrian forces believe have links to a suicide attack that killed four Americans in January, an American official said Tuesday.
The official, speaking on the condition of anonymity because he was not authorized to comment publicly, said the prisoners were being held by the U.S.-backed Syrian Democratic Forces (SDF), a Kurdish-dominated group that has been the chief on-the-ground American partner in Syria.
The official spoke hours after the SDF announced that it had captured suspects in the attack, which targeted Americans posted to Syria’s northern city of Manbij in order to conduct counterterrorism and intelligence operations. It was the single deadliest incident involving U.S. government personnel in the war against the Islamic State. . . .