"There are no areas in the suburbs of Aleppo under the control of al-Nusra, the areas in the western suburbs of Aleppo and in the city itself that come under air strikes daily are controlled by our movement, which is part of the Free Syrian Army and not Jabhat al-Nusra," a FSA representative told RIA Novosti over the phone.
On Wednesday, the Russian center for Syrian reconciliation at the Hmeimim airbase reported that al-Nusra Front militants were carrying out attacks in northwestern parts of Aleppo. According to the reconciliation center, the attacks have led to casualties and injuries among civilians.
The US State Department acknowledged at the end of April that al-Nusra Front does control parts of Aleppo, saying that airstrikes on the terrorist group in that area are not violations of the ceasefire agreement.
Syria has been mired in civil war since 2011, with government forces loyal to Syrian President Bashar Assad fighting numerous opposition factions and extremist groups, such as the Islamic State (ISIL, also known as Daesh) and al-Nusra Front.
A US-Russia-brokered ceasefire came into force across Syria on February 27. Daesh and al-Nusra Front, both outlawed in Russia, were not part of the deal.
