The group and its jihadist rival al-Qaeda are blamed for most attacks in the region, including the targeted killing of French aid workers in 2020.
The IS group's weekly newspaper, al-Naba, claimed attacks against the army and pro-army "militias" in Niger, against al-Qaeda rivals in Mali and Burkina Faso, and against "spies" in Mali - covering a period between early July and early September.
It is typical of IS claims from the Sahel to be weeks
and even months old.
In its latest al-Naba report, the group
reiterated that such delays were caused by "the security and technical
circumstances [affecting] the mujahidin" on the ground.
Two members of an Islamist militant group in Burkina Faso have been convicted and sentenced to 20 years in prison, in the first trial of its kind in the country.
The men were members of Ansar ul Islam, a group formed by popular Islamic preacher Ibrahim Dicko, who reportedly died in 2019.
The two men - aged 38 and 29 - admitted to charges that they attacked a school in the central region in 2018 and set it on fire because they believed the school's teachings were contrary to Islamic law.
The court also ordered the them to pay $7,000 (£5,000) in damages.
Burkina Faso begins long-awaited terror trials
BBC News, Abidjan
A court in Burkina Faso's capital, Ouagadougou, has begun the country's first terrorism trial since 2015.
are also accused of having participated in several attacks against the UN
mission in Mali (Munisma) and the destruction of mausoleums in the city of
Arouna Sinaré and
Ousmane Kindo are being prosecuted for "association with terrorist
groups, murder, attempted murder, illegal possession of weapons, destruction of
property." They both denied the charges against them.
For years Burkina Faso has been facing militant
insurgencies that have caused many casualties and thousands of internally
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Burkina Faso army destroys militants' base
The army in Burkina Faso says its soldiers destroyed a “terrorist base" and killed dozens of militants in an operation north of the country.
The offensive in the forests of Toulfé and Tougbrebouli took place during the week of July 12 to 18.
Three soldiers died and eight others were wounded during the counter-terrorism operation, according to the weekly report on security operations published by the
Armaments, ammunition and camp equipment were recovered.
In the same week, the
national armed forces, in coordination with other forces, launched a search
operation in the Kaboré Tambi National Park in the east.
A hundred patrols
were conducted resulting in the dismantling of sites where illegal activities were taking place and suspects arrested, the army said.
Like neighbouring Mali and
Niger, Burkina Faso has been facing growing insecurity since 2015.
Militants in Burkina Faso police attack 'neutralised'
BBC News, Abidjan
Burkina Faso's defence and security forces say they have neutralised seven members of an extremist group in the Centre-Nord region.
They have been identified as among those who attacked a national police unit on 21 June.
The security forces and police say the operation was conducted last week in the locality of Madou.
The raid was supported by the country's air force aircraft and led to the identification of a school where the armed group had set up its base.
Weapons, ammunition, equipment, and identification papers belonging to the police officers who were victims of the attack were found at the site.
A police vehicle, a large quantity of fuel, foodstuffs, medicines, and various other materials were also discovered.
Pressure has increased on President Roch Kabore - who took the role of defence minister last week in a cabinet reshuffle - to call for a tougher government response to jihadist attacks attributed to groups linked to al-Qaeda and Islamic State.
Thousands took to the streets to protest in the capital Ouagadougou on Saturday.
Thousands demand end to Burkina Faso insecurity
Thousands of people took to the streets of several cities in Burkina Faso over the weekend, including the capital Ouagadougou, to protest against the growing insecurity in the country.
Opposition politicians called the demonstrations to denounce the government's handling of the crisis.
More than one million people have been displaced due to the frequent jihadist attacks that are also fuelling inter-communal violence.