Midzi, 62, was found dead in his car at his Marirangwe farm, about 60 kilometres south of the capital, Harare, on Tuesday morning.
National police spokesperson Senior Assistant Commissioner Charity Charamba could not immediately confirm the death of the former Energy and Power Development minister, but said the police were at the scene investigating the cause.
“I will give you a full statement later,” Charamba said.
Details surrounding the former legislator’s death are still sketchy.
Midzi was one of the many party officials chucked out of Zanu PF earlier this year for alleged links with former Vice-President Joice Mujuru and for allegedly fanning factionalism in the capital.
At the time he was expelled, he was Zanu PF Harare provincial chairperson before the provincial executive passed a vote of no confidence in him.
Midzi served successively in Cabinet as Energy and Power Development minister and Mines and Mining Development minister between 2002 and 2009.
Before that, he had been appointed Ambassador to the United States in 1993.
In March 2002, he ran as Zanu PF candidate for Mayor of Harare, but lost to Morgan Tsvangirai’s Movement for Democratic Change candidate Elias Mudzuri.