In a church in Dablo, north of Burkina Faso, armed men killed six people, including a priest, when the Mass was celebrated.
The attackers were said to have been between 20 and 30 and then burned down The Church.
The mayor of the city, Ousmane Zongo, said that there was panic when other buildings were burned down and a health center plundered.
In Burkina Faso, jihadist violence has erupted since 201
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How did the attack develop?
It started around 9:00 am (GMT and local time) during the fair.
The mayor of Dablo, Mr. Zongo, told AFP: "Armed people are storming into the Catholic church … They started shooting when the community tried to escape.
" The church is in a state of panic City, village. People are locked up in their homes, nothing is going on. The shops and shops are closed. It is practically a ghost town, "he said.
Security forces told AFP that reinforcements were being sent from Barsalogho, some 45 km to the south.
A local journalist told the BBC that among those killed, church elders and local residents were upset that soldiers at a nearby base did not respond promptly. [1965-9014] Who could be behind the attack?
Islamist groups have been blamed for a series of attacks in the West African nation in recent years.
In fighters active in the region are linked to Al-Qaeda and the Islamic State Group and local Ansarul Islam.
Last month, attackers attacked a Protestant church in Silgadji City and killed at least six people.
And In early April, four people died when a Catholic church was attacked in a nearby village, said Bi Schof from Dori in northern Burkina Faso opposite the Vatican news agency Fides.
Also schools and teachers were attacked by the opposition groups to We strict education.
On Friday, French special forces conducted a rescue mission to northern Burkina Faso, freeing four hostages.
It is believed that the four – two French citizens abducted in Benin, a South Korean and an American – had gone to Mali to be handed over to the militant group Katiba Macina. Two French soldiers died during the mission.
What does it look like?
Burkina Faso is one of the countries in the vast Sahel region that is fighting Islamist uprisings in the region.
It formed a regional force together with G5 Sahel. Niger, Chad, Mauritania and Mali attack the militants.
In January, Prime Minister Paul Kaba Thieba stepped down under mounting pressure for increased abduction and jihadist attacks, and Christophe Joseph Marie Dabiré became his successor.
France The former colonial ruler of the region has around 4,500 soldiers in four nations, who carry out a mission code-named Barkhane to fight the jihadists.
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