Government forces have broken a siege by Islamic State (IS) of an airbase in northern Syria, state media report.

Army units had made contact with troops defending Kuwairis airbase, east of Aleppo, and eliminated large numbers of militants, the Sana news agency said.

The facility had been under attack by the jihadists for nearly two years.

Meanwhile, at least 22 people were killed and many more wounded by rebel shellfire in the Mediterranean city of Latakia, state media and activists say.

The blasts hit two separate areas of the city, according to the Britain-based Syrian Observatory for Human Rights. With many of the wounded in serious condition, the death toll is expected to rise, the Observatory said.

Latakia, which lies in the heartland of President Bashar al-Assad's minority Alawite sect, has largely escaped the conflict that has devastated most of Syria and killed more than 250,000 people.