War planes conducted several raids on Aleppo Countryside towns, leaving a youth killed and several injured, Syrian Observatory for Human Rights (SOHR) said on Sunday.
Other air raids on northwestern Aleppo countryside towns left many injured and resulted in collateral damage, the London-based SOHR added.
The attacks came as the Russian-brokered ceasefire entered its second day.
Meanwhile, Syrian army killed 20 Daesh members after attacking their outposts in Deir ez Zor Sunday morning, local source said
Similar raids against Daesh were carried out on Sunday by the Syrian army.
On the first day of the cessation truce, Saturday, Daesh killed three children and injured 12 person when they launched artillery shelling on al Jora and al Kosor.