In a statement issued on Monday the leaders of about a dozen armed factions, including the Saudi and Turkish-backed Jayshal-Islam and Jaysh al-Fateh, announced the formation of “a joint operation room” to coordinate new attacks on government forces.
Both the Syrian government and the opposition sides have accused one another of breaking the truce deal signed on February 27, which excluded the Daesh and al-Nusra Front terrorist groups that are operating in the east and north of the country.
The hard-won ceasefire began to unravel as fighting escalated near Syria's second largest city Aleppo this month, Fars News reported.
On Monday, militants launched a fierce attack against Syrian government forces in Latakia province and in Haman amid heavy government air strikes in Homs province in the south.
A Syrian military source confirmed intense fighting in the area.
"Today they attacked in the northern Latakia countryside in several areas, in violation of the cessation of hostilities agreement, and also in the northwestern Hama countryside," the military source said.