Syrian army units inflicted heavy losses upon militants in Damascus Countryside. Army units destroyed a factory for manufacturing explosive devices to the North-west of Yabroud and weapons and ammunition cache in the Western farms of Jairoud in addition to destroying militants' vehicles in Jaba'din in Damascus Countryside, a military source told SANA Thursday. The army units also eliminated all members of armed militant groups to the East of Housh Arab, in al-Saqi street in al-Nabek and South of Sar cleaners factory in Adra.