[3] Prior to his appointment to Zimbabwe's cabinet, Ncube served as Midland's provincial ZANU–PF youth league secretary for administration.
[4] Under Ncube's leadership as national security minister, a crackdown was ordered against demonstrators who were protesting a 150 percent fuel hike in January 2019.
[7] An internet blackout was ordered by Ncube as the police and armed forces responded to the demonstrations, a decision that was later ruled to be an over-extension of power by a High Court judge.
[11] On 1 February 2021, the United Kingdom imposed a travel ban and freezing of assets on Ncube, Isaac Moyo, Godwin Matanga, and Anselem Sanyatwe.
In a statement, Chief Secretary to the President and Cabinet, Misheck Sibanda, said Ncube had been removed for “conduct inappropriate for a Minister of Government”[13][14] In September 2023, he returned to the government as Midlands Provincial Affairs minister in the Third Cabinet of Emmerson Mnangagwa.