As many as 22 people are dead after an Isis suicide bomber targeted a Kurdish wedding party in northeast Syria, a monitor has said.

The UK-based Syrian Observatory for Human Rights, which relies on a network of contacts across the country, revised the death toll from Monday’s attack in Hasekeh province up from 12 to 22. Dozens of people were wounded, Rami Abdulrahman of SOHR said. Kurdish media put the number of wounded at 47.

A picture taken shows the damage at a wedding hall, a day after a suicide attack targeted a Kurdish wedding party in the village of Tall Tawil in the Syrian Hasakeh province. Reuters (Getty)

The ceremony in the Kurdish-controlled village of al-Tall was for a member of the mostly Kurdish Syrian Democratic Forces (SDF), an umbrella group which has been fighting Isis in the north of the country. The groom was reported as among the dead.

A woman, who was wounded in a bombing at a Kurdish wedding in the northeast Syrian city of Hasaka, lies in a hospital in Dohuk province, Iraq (Reuters)

Isis claimed responsibility for the incident online across several social media accounts with a statement which said a militant ambushed the Kurdish party inside a hall with a machine gun, and after running out of ammunition used a suicide vest on the “PKK [Kurdish Workers’ Party] apostates.”

Graphic video from Kurdish news sites purportedly showing the aftermath of the attack show broken glass and concrete everywhere. The floor of the hall is covered in blood.

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Isis previously attacked a wedding party in Gaziantep in the Kurdish region of Turkey in August, with 54 people dying in the blast. President Recep Erdogan said it was carried out by a child aged between 12-14, although Isis did not claim responsibility.

The terror group has lost swathes of its territory on the Turkish/Syrian border to advances by Kurdish and Turkish-backed Syrian rebels since Turkey launched Operation Euphrates on 24 August.