The Syrian Observatory for Human Rights said several other people, including local civilians, were killed in the blast

Washington, Jan 16, 2019 -Four Americans, including two troops, were among those killed in a suicide attack in the northern Syrian city of Manbij on Wednesday, the Pentagon said.

"Two US service members, one Department of Defence civilian and one contractor supporting DoD were killed and three service members were injured while conducting a local engagement in Manbij," the US military's Central Command said in a statement.

The Syrian Observatory for Human Rights said several other people, including local civilians, were killed in the blast.