The 52-year-old prime minister died in a South African hospital four weeks after testing positive for COVID-19.
The prime minister of Eswatini, Africa’s last absolute monarchy, died in a South African hospital on Sunday, the government said in a statement.
Ambrose Dlamini, 52, tested positive for COVID-19 four weeks ago.
“Their Majesties have commanded that I inform the nation of the sad and untimely passing away of His Excellency the Prime Minister Ambrose Mandvulo Dlamini,” Deputy Prime Minister Themba Masuku said in a statement.
The prime minister “passed on this afternoon while under medical care in a hospital in South Africa,” he added, without detailing the cause of Dlamini’s death.
Dlamini had announced in mid-November that he had tested positive for the coronavirus but said that he felt well and was asymptomatic.
He was moved to South Africa on December 1, to “guide and fast-track his recovery,” from COVID-19. At that time, the government said Dlamini was stable and responding well to treatment.
Dlamini was appointed prime minister in November 2018, following his position as the chief executive officer of telecoms company MTN Eswatini. He had worked in the banking industry for more than 18 years, including as the managing director of Eswatini Nedbank Limited.
Formerly known as Swaziland, the kingdom of Eswatini has reported over 6,700 coronavirus cases and 127 deaths among its population of 1.2 million people.
A South Africa-based civil society group, the Swaziland Solidarity Network (SSN), had accused the government of giving the prime minister special treatment by moving him to a country with better healthcare.
More than 39 percent of the tiny landlocked country’s population lived below the poverty line in 2016 and 2017, according to the World Bank.
There are not many people in the world who are able to change the name of a nation. But King Mswati can - he is one of the world's few absolute monarchs.
King Mswati III of Swaziland announced on Wednesday that he was renaming the country "the Kingdom of eSwatini". The monarch announced the official change in a stadium during celebrations for the 50th anniversary of Swazi independence.
The celebrations also marked the king's 50th birthday.
The new name, eSwatini, means "land of the Swazis". The change was unexpected, but King Mswati has been referring to Swaziland for years as eSwatini. It was the name the king used when he addressed the UN general assembly in 2017 and at the state opening of the country's parliament in 2014.
He explained that the name had caused some confusion, saying: "Whenever we go abroad, people refer to us as Switzerland." The BBC's Nomsa Maseko in Swaziland says the announcement of the name change has angered some in the country, who believe the king should focus more on the nation's sluggish economy.
Swaziland's leadership has been criticised by human rights activists for banning political parties and discriminating against women.
More about the country
The son of Sobhuza II, who reigned for 82 years, King Mswati currently has 15 wives. According to official biographers, his father took 125 wives during his reign.
The king, known as Ngwenyama or "the lion", is known for his many wives and for his adherence to traditional dress.