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.