Gary Aitkenhead, chief executive of the Defense Science and Technology Laboratory at Porton Down in England, told Sky News that while the scientists managed to identify the chemical used in the Skripal poisoning case as a "military-grade nerve agent," they were unable to determine its "precise source."
About two weeks earlier, however, British Foreign Secretary Boris Johnson insisted during an interview with Deutsche Welle that Porton Down scientists were "absolutely categorical: when they allegedly assured him that "there’s no doubt" that the chemical came from Russia.
READ MORE: 'Embarrassing': Social Media Abuzz Over Russia Not Identified as Novichok Source
Many social media users were nonplussed by this development, voicing their concerns via Twitter and calling on Johnson to be held accountable.
Some also complained about the BBC apparently being reluctant to report on this issue.
And others simply cracked jokes and quipped about Johnson’s predicament.