The Syrian TV showed a number of Saudi-made containers of materials used by the militants in the production of chemical gases.
The Syrian army found these containers in a warehouse in Jobar district on Saturday.
The discovery came after the government forces surrounded a sector of militant-held district of Jobar on Saturday.
Syrian army soldiers also found chemical agents in tunnels dug by the foreign-backed militants in the northeastern suburb of the capital, Damascus, the Syrian TV said.
"Army heroes are entering the tunnels of the terrorists and saw chemical agents," Syria television said, adding, "In some cases, soldiers are suffocating while entering Jobar.”
It added that ambulances arrived in the region to rescue the people who were suffocating in Jobar and the area is now controlled by Syrian army forces.
On Wednesday, Syrian opposition claimed that hundreds were killed in a government chemical attack on militants’ strongholds in Damascus suburbs of Ain Tarma, Zamalka and Jobar before dawn.
The Syrian army has vehemently denied allegations that it used chemical weapons against Takfiri militants in the suburbs of the Ghouta region, saying the accusations were fabricated to distract the visiting team of UN chemical weapons experts and to cover up militants’ losses.
Syria has been gripped by deadly unrest since 2011. A very large number of the militants operating inside Syria are foreign nationals.
According to reports, the West and its regional allies - especially Qatar, Saudi Arabia, and Turkey - are supporting the militants inside Syria.
HH/HH