At least 30 militants were killed and many others injured in a security operation by the Syrian army in the southern province of Daraa, reports said on Sunday.The military forces on Saturday evening destroyed weaponry and rocket launchers in an operation that took place in Daraa, reported Xinhua, adding that two militant groups were eliminated in Daraa al-Balad area.Last Thursday, a coalition of 51 militant and jihadi groups declared the start of a major offensive to drive government forces out of Daraa.The offensive, dubbed "Storm of the South", aimed to take control of the entire city of Daraa and its vicinity, according to the Syrian Observatory for Human Rights.