State television says 42 people were injured in the blast, including one of the vice presidents.
Several officials injured, including vice president
National police spokeswoman Charity Charamba said police were pursuing leads after the blast at a stadium in Bulawayo, the opposition heartland.
US leader contends country's immigration practices are a 'mockery' to good policy
Reports draws anger from some Singaporeans on social media - though one commentator said it was a small price to pay - the cost of a chicken-rice dish for each citizen - to contribute to regional peace
“The campaign so far has been conducted in a free and peaceful environment, and we will not allow this cowardly act to get in our way as we move towards elections. Let us continue to be united and address our differences peacefully."
Footage from Zimbabwe state television showed the explosion took place near Mnangagwa as he waved to supporters.
“Mrs Chiwenga was slightly injured. Her husband was also affected in a minor way,” the source said.
“There has been an incident at Bulawayo (White City Stadium) where the president was addressing a rally. This is now a police issue but the president is safe at Bulawayo State House,” spokesman George Charamba told Reuters.
Lower prices will likely increase the country’s Internet penetration rate, which the country’s regulator says stood at 50.8 percent last December, as more subscribers find it cheaper to access the Internet.
UN's Assistant Director for Political Affairs meets with embattled electoral commission, urges free and fair election
Last week, some Zimbabwe opposition parties were unable to register their candidates for the July 30th presidential election