BEIRUT: A suicide bomber killed at least 30 on people Monday in an attack targeting a party in the northeastern Syrian province of hasakeh, the Syrian Observatory for Human Rights and medics said.

"A suicide bomber blew himself up inside a hall in Tall Tawil village during the wedding of a member of the Syrian Democratic Forces, killing at least 22 civilians," Observatory chief Rami Abdel Rahman told AFP.

The SDF is an Arab-Kurdish coalition battling jihadists of the Islamic State (IS) group in northern Syria.

A witness named Ahmad, who was wounded in the head in the blast, described the moment the bomber struck.

"As the bride and groom were exchanging their vows I saw a man wearing a thick black jacket pass beside me," he said.

"I thought he looked strange and a few seconds later there was an enormous explosion.

"People had fallen on the ground and I saw bodies torn to bits."

The Observatory and local Kurdish officials initially said the groom was among the dead, but one of his relatives told AFP that both bride and groom were safe and well.

A hospital source in Hasakeh city told AFP there were "more than 20 dead and dozens wounded".

The AFP correspondent saw many wounded people, some with bloodied bandages on their heads.