The Islamic State group said on Wednesday that it carried out a suicide bombing that killed 16 people in a mainly Kurdish city in northeastern Syria.

Syrian President Bashar Assad joined Eid al-Fitr prayers at a mosque in third city Homs on Wednesday in a rare public appearance outside the capital for the end-of-Ramadan holiday.

At least 13,000 civilians have fled the Islamic State group bastion of Manbij in northern Syria since the launch of a US-backed offensive there, a monitor said Monday.

The Israeli army attacked two Syrian military targets on the Golan Heights after stray Syrian fire damaged the security fence along the demarcation line, a spokeswoman said Monday.

A car bomb killed at least 10 people on Wednesday in a Syrian town near the Turkish border held by US-backed Kurdish-led forces, a monitoring group said.

Another nine people were wounded in the attack in Tal Abyad, which was captured from the Islamic State group by the Kurdish People's Protection Units (YPG) and allied Arab groups in June last year, the Syrian Observatory for Human Rights said.

A Russian soldier who had come under fire in Syria's Aleppo region has died of his injuries, Russia's defense ministry said Thursday.

A large aid convoy is ready to go to al-Waer, a besieged area in Syria's Homs governorate, and is expected to bring in desperately needed aid Thursday, the U.N. said.

U.S. Secretary of State John Kerry warned Russia and the Syrian government on Wednesday to respect a "frayed" ceasefire, as vicious fighting south of second city Aleppo left dozens dead.

Air strikes on a market in Syria's al-Qaida-held city of Idlib killed at least 21 civilians including five children on Sunday, a monitor said.

Hundreds of civilians escaped a besieged jihadist bastion in north Syria on Sunday helped by a U.S.-backed Kurdish-Arab alliance surrounding the town, a monitor said.