About 30 Kurdish fighters and Turkey-backed rebels were killed on Wednesday during battles that have flared in northern Syria's Raqqa Province, according to a war monitor.

Battles intensified on the outskirts of the town of Ayn Issa in the northern countryside of Raqqa over the past 24 hours, with airstrikes and artillery shelling by Turkish forces and Turkey-backed rebels against the Kurdish militia of the Syrian Democratic Forces (SDF), said the Syrian Observatory for Human Rights.

A total of 305 SDF fighters, 353 Turkey-backed rebels and 24 Syrian government troops have been killed since Turkey started a wide-scale offensive against Kurdish-held areas in northern Syria on October 9, according to the London-based watchdog.

Turkey began its campaign against the SDF and its broader umbrella of the Kurdish People's Protection Units, known as YPG, as Ankara deems them as terrorists and separatists.

A few deals have been reached since October 9 under the Russian mediation, which led to a halt in fighting in some areas and the entry of Syrian troops to Kurdish-held areas on the Syrian-Turkish border.

However, Turkey has recently charged that the Kurdish militia did not withdraw from certain areas near the Turkish border, which explains the renewed fighting between the Kurdish militia and the Turkey-backed rebels.

(With input from Xinhua News Agency)