New videos ported on internet show armed groups in Syria committing war crimes as they were brutally killing civilian and other soldiers in several regions across the crisis-hit country.
One of the videos, uploaded recently, shows heavily armed men shooting down a civilian airliner in the city of Deir al-Zour in eastern Syria.
Another footage showed Syrian insurgents from the al-Qaeda linked al-Nusra Front have executed three Syrian army soldiers, also in Deir al-Zour.
In the video released by the group and posted on YouTube, the three soldiers, seated in front of a black flag, give their identities to masked men branding Kalashnikovs.
The soldiers reveal themselves as Alawites. The graphic footage then shows the bodies of the men lying in a ditch.
Another footage posted on a social media website shows a militant attack on the Taftanaz military airport in the northwest of the country.
The video shows militants firing truck-mounted weapons and a tank on fire