The husband of Tanzania's President Samia Suluhu Hassan, Hafidh Ameir Hassan has died while receiving treatment at a hospital in Zanzibar.
Vice-president Deogratius Ndejembi - who made the official announcement of Ameir's death - said he had been suffering from a heart condition.
Ndejembi added that funeral arrangements are under way in Kizimkazi, a village on the country's semi-autonomous island of Zanzibar.
Ameir was an agricultural academic who largely kept a low public profile. He became Tanzania's first First Gentleman after President Hassan took office in 2021.
In his announcement, Ndejembi said Ameir died at 08:00 local time (06:00 GMT) on Monday at the Emilio Mzena Memorial Hospital.
The vice-president led tributes as he conveyed his condolences to President Hassan, Ameir's family and friends.
Kenyan President William Ruto said he received the news of his passing with "deep sorrow".
"President Samia has lost a lifelong companion, her children a beloved father, and Tanzania a distinguished son," he wrote on social media.
The First Gentleman rarely appeared in public alongside the president. He was only occasionally seen with her at official events.
He married Hassan in 1978, before she entered national politics. The couple had four children - three sons and a daughter - together.
Their daughter, Wanu Hafidh Ameir, is also a politician who currently serves in Zanzibar's House of Representatives in the National Assembly.
BBC