The gunman who killed two U.S. soldiers and an American civilian interpreter had been set to be dismissed from the security forces over his extremist views, U.S. and Syrian officials said.

A Syrian security guard who attacked and killed three U.S. citizens in Syria had joined the internal security forces two months earlier.

A man who carried out an attack in Syria that killed three U.S. citizens had joined Syria’s internal security forces as a base security guard two months earlier and was recently reassigned amid suspicions that he might be affiliated with the Islamic State group, a Syrian official told The Associated Press Sunday. The attack Saturday in the Syrian desert near the historic city of Palmyra killed two U.S. service members and one American civilian and wounded three others. It also wounded three members of the Syrian security forces who clashed with the gunman, interior ministry spokesperson Nour al-Din al-Baba said.

A man who carried out an attack in Syria that killed three U.S. citizens had joined Syria’s internal security forces as a base security guard two months earlier and was recently reassigned amid suspicions that he might be affiliated with the Islamic State group, a Syrian official told The Associated…

Two US troops and a civilian interpreter were killed when an alleged member of the Islamic State group opened fire on a joint US-Syrian patrol, officials said on Saturday.