MOSCOW (AP) — Russia on Friday dismissed recent reports of the Syrian government using chemical weapons on rebel-held areas as fabrication.

The UN Security Council called for an investigation Wednesday over allegations that government forces have attacked rebel-held areas with poisonous chlorine gas in recent weeks and months.

Syria’s government has denied the accusations, which it said were politicized. The US and France said they were looking into the reports, but had no definitive proof.

Russia’s Foreign Ministry on Friday vehemently denied that Syria’s government was behind the chemical attacks, calling it fabrication.

“Accusations against government forces of alleged use of poisonous chemical weapons continue to be fabricated,” the ministry said in a statement, adding that Moscow has “reliable information” proving “such allegations aren’t true.” But the ministry didn’t provide details about the information it said it had.

More than 150,000 people have been killed and millions uprooted from their homes since the Syrian conflict erupted in March 2011.

Copyright 2014 The Associated Press.