The Latest: Blast aboard bus in northern Syria kills 3

DAMASCUS, Syria (AP) — The Latest on the Syrian conflict (all times local):
1:45 p.m.
A Syrian war monitoring group says a blast aboard a bus in the northern Syrian town of Afrin has killed at least three people.
The attack came on the anniversary of a Turkish military operation that evicted Kurdish fighters from the town.
The town now is under the control of Turkey-backed Syrian opposition fighters.
The Britain-based Syrian Observatory for Human Rights says three people were killed and ni