UK Foreign Secretary Boris Johnson called on Sunday for an urgent investigation into the media reports about the use of chemical weapons by the Syrian government forces in the city of Duma, which allegedly claimed lives of dozens of people, Sputnik reported.

On Saturday, several media outlets reported, citing Syrian militants, that the country's army had used chlorine in the city of Duma, killing up to 70 people and injuring hundreds of others. In turn, Syria’s SANA news agency reported quoting Syrian officials that these allegations were merely a provocation by Jaysh al-Islam group and other militants to hinder the advance of the Syrian government’s army.

"These latest reports must urgently be investigated and the international community must respond. Investigators from the Organisation for the Prohibition of Chemical Weapons looking into reports of chemical weapons use in Syria have our full support. Russia must not yet again try to obstruct these investigations," Johnson said as quoted in the Foreign Office's press release.

Johnson stated that in the event the chemical attack confirmed it would be another example of the Syrian government's "brutality."

"We condemn the use of chemical weapons by anyone, anywhere. We are in close touch with our allies following these latest reports. Those responsible for the use of chemical weapons have lost all moral integrity and must be held to account," Johnson added.