Mugabe is under army siege

Zimbabwe's long-time president Robert Mugabe is holding talks with South African negotiators over his future.

In Harare, the capital, crowds gathered at Zimbabwe Grounds in the Highfield township and at Freedom Square in the city center, while smaller groups marched through the streets, singing and dancing. A rally in Bulawayo, the second-largest city, also drew thousands of people. Some protesters draped themselves in the national flag and others embraced soldiers who kept watch on the festivities. Several street signs bearing Mugabe’s name were ripped down.

Zimbabwe's ruling party has set in motion a plan to impeach President Robert Mugabe, who has refused to answer repeated calls to step down even after effectively being stripped of his powers.
Mugabe's ZANU-PF party, which he co-founded and led for nearly four decades, ousted the 93-year-old as party leader on Sunday and gave him an ultimatum -- relinquish the presidency by midday on Monday or face an impeachment vote in Parliament. The party has said it will introduce the plan to Parliament on Tuesday.
A source told CNN that Mugabe had agreed to terms for his resignation in talks with military leaders who have seized control in the country, and that a letter had been drafted. But the midday deadline to resign passed Monday with no word from the defiant leader.

Zimbabwe's President Robert Mugabe has resigned, parliament speaker Jacob Mudenda says.

A letter from Mr Mugabe said the decision was voluntary, Reuters news agency reports.

The surprise announcement came as lawmakers debated an impeachment motion against Mr Mugabe in a joint sitting of parliament.

Mr Mugabe had previously refused to resign despite last week's military takeover, and days of protests.

He has been in power since independence in 1980.