On Wednesday, Syrian President Bashar al-Assad’s forces allegedly launched a chemical gas attack that resulted in the deaths of 1,300 people near Damascus, Syria, according to a Syrian opposition group, the Syrian National Coalition. An authoritative number of casualties has been difficult to report as demonstrated by the wide range of casualty numbers being reported by various sources.

The claim of chemical weapon attacks and the number of casualties could not be independently verified. However, several photos surfaced of the aftermath of the attack, which can be viewed below.

Warning: The photographs below are graphic in nature.