"We have multiple evidences that Turkey and Saudi Arabia are not only helping to smuggle through the borders toxic substances but also set some production shops of shells and chemical substances on the border with Syria," Tarek Ahmad said, urging the international community to counter the alleged move.
A spokesman for Syrian Kurds told Sputnik on Thursday that some cases of gas poisoning had been registered among the civilian population and Kurdish militia following a Wednesday militant attack on Aleppo.
The Jaysh al-Islam group took responsibility for the shelling the same day, stating that "forbidden" weapons had been deployed, while failing to specify whether chemical agents were used.
On Tuesday, the Islamic State (ISIL or Daesh) militant group, which is outlawed in Russia, reportedly used mustard gas in an attack against a Syrian army airbase in the province of Deir ez-Zor.
