Syrian rebels attacked a key army base in the northwest province of Idlib Friday, AFP news agency reported, citing The Syrian Observatory for Human Rights.
The group also said that warplanes belonging to the Syrian regime launched air raids in a Damascus province.
Two rebels were killed, according to the British-based watchdog.
Meanwhile, rebels and fighters from the jihadist group the Al-Nusra Front, attacked regime troops guarding Aleppo airport, according to the Observatory, as reported by AFP.
According to the group, at least 121 people were killed across Syria on Friday.