Turkey said on Thursday the autopsies of three Syrians killed in an attack in rebel-held northwestern Syria confirmed that chemical weapons had been used by President Bashar al-Assad's regime, state media reported.
"Autopsies were carried out on three of the bodies after they were brought from Idlib. The results of the autopsy confirms that chemical weapons were used," Justice Minister Bekir Bozdag said, quoted by state-run Anadolu news agency.
"This scientific investigation also confirms that Assad used chemical weapons," Bozdag added, without giving further details.
However Syria's Foreign Minister Walid Muallem told reporters in Damascus the country's armed forces "did not and will not" use chemical weapons.
"I stress to you once again: the Syrian army has not, did not and will not use this kind of weapons -- not just against our own people, but even against the terrorists that attack our civilians with their mortar rounds," he said.
The Kremlin said US allegations that Syrian forces carried out a deadly chemical attack are not based on "objective" information.
"Any data that the American side or our colleagues in other countries could have cannot be based on objective materials or evidence," Kremlin spokesman Dmitry Peskov told reporters, adding that the incident in rebel-held Khan Sheikhun was a "monstruous crime."
Thirty-two injured Syrians were brought to southern Turkey for medical treatment but three of them died in hospital.
A Syrian girl is being brought to Reyhanli State Hospital in Hatay, Turkey on April 4, 2017. (Getty) Source: Anadolu
At least 86 people were killed early on Tuesday in Khan Sheikhun and dozens more were being treated after they were found convulsing and foaming at the mouth.
Autopsies were conducted by officials from the World Health Organization in the southern province of Adana together with officials from Organisation for the Prohibition of Chemical Weapons, Bozdag said.
The wounded had been brought from Idlib through Turkey's Cilvegozu border gate for the treatment in the Reyhanli district of Hatay province.
Turkish President Recep Tayyip Erdogan, a vocal critic of Assad, called the Syrian president a "murderer" on Wednesday after denouncing the world's "silence" on the deaths.
Russia, Assad's main ally, has said a Syrian air strike had hit a "terrorist warehouse" but Erdogan has yet to make any reference to the Russian claim.
Moscow has been one of the regime's biggest supporters together with Iran while Turkey has given support to Syrian opposition fighters.
Recently Ankara said it "successfully completed" its military operation supporting Syrian rebels against the Islamic State group launched last August in northern Syria.
