A toxic chemical, almost certainly chlorine, was used “systematically and repeatedly” as a weapon in attacks on villages in northern Syria earlier this year, the global chemical weapons watchdog said Wednesday.

The Organization for the Prohibition of Chemical Weapons said that a report by a fact-finding mission it sent to Syria based its conclusion on dozens of interviews with victims, physicians, eye-witnesses and others.

The report does not apportion blame for the chlorine attacks on three villages in northern Syria, OPCW spokesman Michael Luhan said. […]