The attackers struck during the night on Friday, killing residents of the village of Solhan in Yagha province, bordering Niger. They also burned homes and the market, the government said in a statement.
It declared a 72-hour period of national mourning, describing the attackers as terrorists, although no group has claimed responsibility. Another 40 residents were wounded, government spokesperson Ousseni Tamboura later told reporters.
The United Nations said Secretary-General Antonio Guterres was outraged by the attack, whose victims included seven children.
Despite the presence of thousands of UN peacekeepers, attacks by jihadists linked to al Qaeda and Islamic State in West Africa’s Sahel region have risen sharply since the start of the year, particularly in Burkina Faso, Mali and Niger, with civilians bearing the brunt.
In May, two Spanish journalists and an Irish citizen
on an anti-poaching patrol were killed after being kidnapped in a national park near Burkina Faso’s border with Benin.
The violence in Burkina Faso has displaced more than 1.14 million people in just over two years, while the poor, arid country is hosting some 20,000 refugees from neighboring Mali.
The latest attack pushes the number killed by armed Islamists in the Sahel region to over 500 since January, according to Human Rights Watch’s West Africa director, Corinne Dufka.
“The dynamic is the jihadists come in, they overpower the civil defence post and engage in collective punishment against the rest of the village — it’s a pattern we’ve seen everywhere this year,” Dufka said.
In March, attackers killed 137 people in coordinated raids on villages in southwestern Niger.
The insurgencies in the more than 1 million square mile Sahel region have been emboldened by the wide availability of weapons that flowed south after the 2011 Libyan civil war. Both Mali and Chad are now in the hands of the military.
The president of Niger told CNN last week that terrorists roaming the Sahel are now armed with weapons that “no non-state groups has ever had access to before”.