The suspected militants have thrown a grenade into a group of sleeping people inside the camp in the village of Nguetchewe.
An official said explosives that were fired from outside the city "landed on separate sites."
Fighters from Daesh West Africa Province drove into remote Felo village in Gubio district in the early afternoon, shooting fleeing residents and running them over with their vehicles.
The global coronavirus pandemic has affected more than five million people, with over 334,000 deaths. Here are coronavirus-related updates for May 22:
From Kashmir to Cameroon, we look at how conflicts in key flashpoint regions are being impacted by the coronavirus pandemic.
Officials say the death toll could climb after militants, who arrived on motorbikes and in cars, attacked a military base in the Gao region.
Sport can play a large role in the recovery after the coronavirus pandemic, and has proven its worth in the past.
"It's the first time we have lost so many men," President Idriss Deby Itno says, after visiting attack site in Lac province, which borders Niger and Nigeria.
For the 27-year-old owner of Gurl Boss Productions, it is the perfect crew to take on the male-dominated world of film production in her central African country and beyond.
On Saturday, around 20 gunmen attacked a gendarmerie and a police station in Galim, in a predominantly French-speaking province, officials said.
Rebels have been fighting for independence for two anglophone provinces in the majority French-speaking country since 2017.
Armed men carried out the bloodshed on Friday in the village of Ntumbo in the Northwest region, James Nunan, a local official of humanitarian coordination agency OCHA said.
Subscribe to our Youtube channel for all latest in-depth, on the ground reporting from around the world.
Copyright © 2020 TRT World.