At least 220 people, including 127 civilians, have been killed in raids and suicide bombings in Sweida province in Syria.
Britain-based Syrian Observatory for Human Rights said the attacks carried out by the Islamic State terror group hit several areas of the largely government-held southern province.
Three suicide attackers set off booby-trapped belts in Sweida city, as other blasts hit villages to the north and east. A fourth suicide explosion again hit the city later.
The Observatory said, it was the deadliest attack
in Sweida provincesince the start of the war in 2011 and one of the deadliest ever in the country.
United Nation's Humanitarian Co-ordinator in Syria, Ali al-Zaataricondemned the bombings, saying all civilians should be protected.
The Russian Foreign Ministry said the attacks confirm the need for energetic and coordinated efforts by the international community to eradicateIS from the Syrian territory. More than 3 lakh 50,000 people have been killed and millions displaced since Syria's war started in 2011.