SANAA — Seventeen civilians were killed in an attack in a market in Yemen's northern Saada governorate, the United Nations said, the third deadly assault on the same location in just over a month.

The attacks come despite relative calm in Yemen, where large-scale combat between government troops and the Iran-aligned Houthi rebels has subsided.

The UN said 12 Ethiopian migrants were among the 17 civilians killed in the incident on Tuesday at the Al-Raqw market in Saada governorate, a Houthi rebel stronghold.

At least 12 people were wounded, it said, without saying who was responsible or what weapons were used.

An attack on Al-Raqw market on Nov. 22 killed 10 civilians, again including Ethiopian nationals, and just days later, at least another 10 civilians were killed and 22 wounded in a second such incident.

The UN says 89 civilians have either been killed or wounded in the attacks on the market.

Tens of thousands of people, mostly civilians, have been killed and millions displaced since March 2015.

The UN considers the war in Yemen the world's worst humanitarian crisis. — AFP