The electoral commission said she had won more than 57% of vote, with her closest rival Panduleni Itula, getting 26%.

Following logistical problems and a three-day extension to polling in some parts of the country, Itula said the electoral process was “deeply flawed”, the Reuters news agency reports.

His Independent Patriots for Change (IPC) party said it would challenge the results in court.

Most opposition parties boycotted the results announcement on Tuesday evening in the capital, Windhoek, the Namibian newspaper reports.

Windhoek is reported to be calm on Wednesday, with neither celebrations nor protests and people carrying on with their normal lives.

After the announcement of her victory, Nandi Ndaitwah said: “The Namibian nation has voted for peace and stability.”

Nandi will join an exclusive club as at the moment Tanzania’s Samia Suluhu Hassan is Africa’s only female president.