Former Tanzanian president Benjamin Mkapa has died age 81 at a hospital in Tanzania's former capital Dar es Salaam, the government announced Friday.
"I'm saddened by the death of the third president of Tanzania and this is a big loss for us as a country," President John Magufuli said in a short televised speech.
"I will remember him for his love of country ... hard work and effort in building the economy. The nation has lost a strong figure," he added in a tweet.
Mkapa is credited with ushering in multi-party democracy at home as well as working to end the conflict in East Africa, leading several peace initiatives as his country's third president between 1995 and 2005.
He continued to seek reconciliation in Burundi, Kenya, Democratic Republic of Congo in the Great Lakes region.
Magufuli declared a seven day mourning period in Tanzania, during which all flags will be flown at half-mast.
From poor family to politician
Mkapa was born in 1938 to a poor family in south-eastern Mtwara.
He earned a degree in English in Uganda and later worked as a journalist before being appointed the press secretary to the country's first president after British colonial rule, Julius Nyerere.
He held several cabinet posts, such as foreign minister and information minister. He also served as ambassador to the US before he was elected president in the country's first multi-party elections.
His presidency was marked by economic reform, such as the privatization of state enterprises and the liberalization of the economy. He also spent significant sums on improving the country's travel infrastructure.
In his memoir published last year, Mkapa wrote that the deadly shooting of some 30 opposition supporters in post-election riots on the semi-autonomous island of Zanzibar in 2001 was one of the "black spots" of his stint in power.
African leaders offer condolences
Burundi's new President Evariste Ndayishimiye on Twitter said he was "deeply saddened" by Mkapa's death.
Africa has "lost a giant," tweeted Kenya's veteran opposition leader Raila Odinga. Mkapa was "a pan-Africanist, a true believer in South-South Cooperation and a global statesman."
"His efforts launched two decades of steady economic growth, fiscal credibility and falling inflation," said Aidan Eyakuze, executive director of civil-society body Twaweza East Africa.
kmm/mm (Reuters,AFP, dpa)