The United Nations Security Council will discuss further sanctions against Zimbabwe next week after a widely condemned one-sided presidential run-off vote on Friday, Germany's Foreign Minister Frank-Walter Steinmeier said.

Steinmeier said foreign ministers from the Group of Eight wealthy nations, who met for two days in Kyoto, agreed that a government that did not represent the will of its people could not be accepted by the international community.

"This was linked with an announcement by the United States, who are currently presiding over the Security Council, that starting next week, this coming Monday, further sanctions will be discussed there," Steinmeier told reporters.

President Robert Mugabe defied international calls to abandon the election after opposition leader Morgan Tsvangirai, who beat Mugabe in the first round of voting in March, withdrew from the run-off over violence and intimidation against his Movement for Democratic Change (MDC) supporters by the ruling ZANU-PF party.