Ahmed al-Sheikho, of the Idlib Civil Defence team, says the Wednesday airstrikes hit near where the suspected chemical attack occurred in the town of Khan Sheikhoun. He says the strikes did not cause any casualties because the area had been evacuated following Tuesday's attack. The UN Security Council is to hold an emergency meeting Wednesday on that attack, which activists say was one of the worst in the country's civil war. The Britain-based Syrian Observatory for Human Rights says 20 children and 17 women are among the 72 killed. READ ALSO: Russia says Syria gas incident caused by rebels' own chemical arsenal Syrian group raises death toll in suspected gas attack to 58