Nigeria's army chief, Lieutenant General Ibrahim Attahiru, died in an air force plane crash on Friday.
He was on an official visit to the northern state of Kaduna, which has had security challenges in recent months.
The air force said in a statement that its plane crashed near Kaduna airport and that it was investigating the cause.
The presidency added that other military officers were also killed in the crash.
President Muhammadu Buhari, in a presidency statement, described the crash as a "mortal blow ... at a time our armed forces are poised to end the security challenges facing the country."
Nigeria, Africa's most populous nation, has had poor air safety record in the past, although it has improved in recent years.
Buhari appointed Attahiru alongside other military chiefs in January after years of mounting criticism over spreading violence by insurgents and armed gangs.
Nine people were treated for life-threatening injuries after a series of stabbings on a train near Cambridge in eastern England on Saturday, and two men were arrested in what UK Prime Minister Keir Starmer called an "appalling incident".
Tanzania's electoral commission declared on Saturday that President Samia Suluhu Hassan had won, with nearly 98 per cent of the votes, an election that set off violent protests across the country this week.
Residents of Vietnam's UNESCO-listed ancient town of Hoi An began cleaning up on Saturday as floodwaters receded after days of torrential rain that caused deadly flooding and widespread damage across the central region.
A stampede at a temple in India's southern state of Andhra Pradesh killed at least nine people early on Saturday, government officials said, with several injured.
Foreign ministers of some Muslim countries will meet in Istanbul on Monday to discuss the Gaza ceasefire and next steps there, Turkish Foreign Minister Hakan Fidan said on Friday, voicing concern over whether the ceasefire will continue.
Tanzania's main opposition party said on Friday hundreds of people had been killed in protests over elections across the country this week, as the government said it was restoring order after "isolated incidents".
A Turkish court sentenced 11 people to life in prison on Friday over a fire that killed 78 people at a ski resort in northwest Turkey's Bolu mountains in January, state media reported.
China's Shenzhou-21 space rocket and its crew including the youngest member of its astronaut corps blasted off on Friday atop a Long March-2F rocket from the Jiuquan Satellite Launch Centre in northwest China, Chinese state media reported.
Welcome to Pinoy Bulletin, your go-to source for staying informed about important announcements, exciting group activities, community events, and job opportunities!
Make sure to tune in every weekdays to Tag Gising Na from 5AM - 10 AM for a comprehensive roundup of important updates.
Welcome to Pinoy Bulletin, your go-to source for staying informed about important announcements, exciting group activities, community events, and job opportunities!
Make sure to tune in every weekdays to Tag Gising Na from 5AM - 10 AM for a comprehensive roundup of important updates.
UK train stabbings injure nine, police arrest two suspects
Tanzania's Hassan declared landslide winner in election marred by violence
Vietnam's ancient town Hoi An works to restore tourism after devastating floods
Indian temple stampede kills nine, injures several
Turkey to host Gaza meeting amid ceasefire concerns
Tanzania opposition says hundreds killed in vote protests
Turkey sentences 11 people to life in prison over ski resort hotel fire
China sends its youngest astronaut to 'Heavenly Palace' space station
