Terrorist groups al-Nusra and Ahrar ash-Sham have received serious reinforcements from Turkey in the Syrian province of Aleppo, a spokesperson for the Russian Foreign ministry said Thursday, January 21, Sputnik News reports.

"Unfortunately, in recent days, we noticed that terror groups have intensified their activities ahead of planned intra-Syrian talks," Maria Zakharova told a weekly press briefing.

Terrorists may use fortifications built by Turkey on its border with Syria as strongholds, the spokeswoman said, adding that Moscow was concerned about increased Turkish military incursions into Syria.

"While all interested sides pin their hopes on the start of a meaningful and inclusive dialogue between the Syrian government and the opposition, some external forces continue helping militants in Syria, including terrorist groups, providing them with arms and ammunition," she said.

Russia will continue its humanitarian operation in Syria, Zakharova noted, adding that Moscow was surprised over Washington's claims that it "does not see" Russian humanitarian aid deliveries to the war-torn country.