Takfiri terrorists have attacked the besieged Shia-majority Syrian towns of Kefraya and al-Foua, sparking deadly clashes with the Shia fighters, a UK-based monitoring group says.
The so-called Syrian Observatory for Human Rights (SOHR) reported that Hay'at Tahrir al-Sham terrorists were "heavily shelling" the towns, both in northwestern Idlib Province, and had broken into them late Saturday.
"This is the fiercest attack in around three years," SOHR head Rami Abdel Rahman told Agence France-Presse.
The fighting, which was continuing Sunday, had killed at least three Takfiri elements, he added.
Around 10,000 people are estimated to live in Kefraya and Foua, which have been encircled by terrorists since March 2015.
Last year, the Syrian government and militants reached a deal, known as the "Four Towns Agreement," that allowed the evacuation of residents of the two towns.