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.
Israel said on Sunday it would halt military operations each day for 10 hours in parts of Gaza and allow new aid corridors in the enclave, where images of severely malnourished children have alarmed the world.
Firefighters battled wildfires across Turkey on Sunday amid a searing Mediterranean heat-wave, with authorities evacuating more than 3,600 people from settlements in two provinces.
The leaders of Thailand and Cambodia will attend mediation talks over their deadly border conflict in Malaysia on Monday, the Thai government said, even as both sides accused each other of launching fresh artillery strikes across contested areas.
Heavy rain around Beijing and across north and northeast China has killed two and forced thousands to relocate as authorities warned of further widespread rain and risks of disasters including landslides and flooding.
Firefighters were battling wildfires across Greece and the Western Balkans on Saturday as the south of Europe sweltered under the third heatwave of the summer, with some villages and settlements being evacuated in Greece and Albania.
Aid trucks started moving towards Gaza from Egypt, Al Qahera News TV said on Sunday, after months of international pressure and warnings from relief agencies about starvation spreading in the Palestinian enclave.
Israeli Prime Minister Benjamin Netanyahu and US President Donald Trump appeared to abandon Gaza ceasefire negotiations with Hamas, both saying it had become clear that the group did not want a deal.
Fighting on the Thai-Cambodian border extended into a third day and new flashpoints emerged on Saturday as both sides sought diplomatic support, saying they had acted in self-defence and calling on the other to cease fighting and start negotiations.
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.
Israeli military announces daily pauses in Gaza areas to allow aid flow
Turkey evacuates thousands as firefighters battle wildfires
Thailand and Cambodia to hold talks on deadly border conflict in Malaysia
Rain in northern China kills 2, forces thousands to relocate
Greece battles wildfires across country, evacuates villages
Aid trucks move from Egypt to Gaza after Israel said it began airdrops
Netanyahu, Trump appear to abandon Gaza ceasefire negotiations with Hamas
Thai-Cambodian fighting extends into third day despite ceasefire calls
