A global chemical weapons watchdog issued a report Wednesday confirming chemical weapons were used by the Syrian air force in northern Syria in 2017.

The report by the Organization for the Prohibition of Chemical Weapons (OPCW) for the first time blamed the Bashar al-Assad regime for using chemical weapons in the town of Ltamenah.

“[..] the OPCW Fact-Finding Mission (FFM) has determined that chemical weapons have been used or likely used in Syria,” it said.

Investigations were conducted between June 2019 and March 2020, focusing on the incidents in the town on March 24, 25 and 30 of 2017.

Read more: Watchdog confirms Syrian regime behind chemical attacks