Syria formally asks UN to probe gas attack

Syrian President Bashar Assad and his government have asked the UN to investigate claims of a chemical gas attack.

Syrian President Bashar Assad has asked the UN to investigate claims of a chemical gas attack. (AAP)

Syrian President Bashar Assad says the Syrian government has formally approached the United Nations, asking it to send in the experts to investigate the April 4 suspected chemical attack.

Assad said in an interview with the Russian state-owned RIA Novosti news agency on Thursday that the UN has not sent anyone yet and blamed Western nations and the United States in particular for not allowing the experts to travel to Syria.

Assad insisted that if the experts arrive, they will see that reports of what happened in the Idlib province "were all lies".