UK says evidence shows Assad was behind chemical attack

“All evidence” points to the Bashar al-Assad regime as being behind Tuesday’s deadly chemical attack in northern Syria, British Foreign Secretary Boris Johnson said on Wednesday.

Johnson’s remarks came upon his arrival to Brussels for an EU/UN conference on Syria.

"All the evidence I have seen suggests this was the Assad regime ... using illegal weapons on their own people," Johnson said.

Over 100 civilians were killed and some 500 more injured in a chemical weapons attack by regime forces in the opposition-held Syrian province of Idlib.

"The U.K. condemns the use of chemical weapons wherever and by whomever they are used and we will continue to lead international efforts to hold perpetrators to account," Johnson said in an earlier statement.

"If this is shown to be the work of the regime, it is further evidence of the atrocities perpetrated against the Syrian people over six years of appalling conflict," he added.