Fresh air strikes were reported in Syria's northwest Idlib province, in which at least 14 people were killed. The Syrian Observatory for Human Rights confirmed that low level fighting continued around 50km (30 miles) from Idlib city, while intense clashes were reported around the main Aleppo city. The attack took place just hours after the US-Russia brokered ceasefire came into effect.
It is not known who launched the air strikes that hit the Syrian town of Binnish bordering Turkey, causing injuries to numerous people, Al Jazeera reported.
A local insurgent commander was among those killed, the observatory said and added that the death toll could go up as many people were severely injured and were in a critical condition. Some of the wounded people are yet to be identified.
Idlib district is controlled by rebel groups including Al Nusra Front, an al Qaeda affiliate, and other Islamist groups.
On May 9, the US Secretary of State and the Russian Federation met in Paris and extended the ceasefire agreement to the entire nation, which was implemented from 1am local time on 10 May. Both, Moscow and Washington was making efforts to end the five-year civil war in Syria.
Extremist groups such as Al Nusra Front and the Islamic State (Isis) are not part of the ceasefire agreement.
Recently, a footage emerged where members of Bashar al-Assad's Syrian army were engaged in a fierce battle with rebels links to al-Qaeda. The drone footage was reportedly of a skirmish close to Aleppo. Rebel fighters were seen bombarding the village of Khan Tuman via missile strikes and later claimed that they had taken over the village from the Syrian army, which was subsequently denied.