Sputnik- Russian military experts say they have found proof of the use of mustard gas by militants against civilians in the Syrian province of Aleppo.

ALEPPO (Sputnik) – The ammunition was used in a September attack on one of the villages in Aleppo province. "An express-analysis of the contents [of ammunition] carried out using a portable infrared spectrometer revealed the presence of vesicant chemical warfare agent sulfur mustard [mustard gas]," Russian Troops of Radiological, Chemical and Biological Defence (RChBD) told journalists on Friday.

The ammunition was used in a September attack on one of the villages in the Aleppo province. On Monday, the Russian Defense Ministry said that Russian military experts had found poisonous chlorine and white phosphorus in nine samples from southwestern Aleppo.

The ministry’s spokesman Maj. Gen. Igor Konashenkov said that the UN-backed Organization for the Prohibition of Chemical Weapons (OPCW) was reluctant to join forces with Russia or send experts to Aleppo, while some OPCW members are ignoring evidence that chemical weapons are being used by militants against civilians in Syria.

On October 27, the OPCW-UN Joint Investigative Mechanism (JIM) expert panel released its latest report claiming that the Syrian government had used chemical weapons at least three times in the country throughout 2014-2015.

An earlier report said Daesh terrorist group was also responsible for several attacks. Syrian government forces have been fighting against multiple opposition and terrorist groups, including Daesh and Jabhat Fatah al Sham, formerly known as Jabhat al-Nusra, or Nusra Front. Russian military experts have been analyzing samples taken in Syria in order to find proof of reports of chemical weapon use by members of radical groups against civilians.