The letters were sent to Public Works Minister Thulas Nxesi, his predecessor Geoff Doidge, and former police minister Nathi Mthethwa.
Zuma’s manifesto launch speech referred to the Constitution. Earlier this month the Concourt ruled he failed to uphold this supreme law, however.
Mantashe said that Mogoeng's public talk about the Concourt's Nkandla judgment would provoke verbal attacks against the judiciary by politicians.
On Thursday the Pretoria High Court dismissed the application for leave to appeal the release of Chris Hani's killer, Janusz Walus.
The full text of former president Thabo Mbeki's response to the Constitutional Court judgment.
The DA reported the Speaker and the ANC MPs who “abetted the President (Jacob Zuma) contravene the Constitution” to Parliament’s Ethics Committee.
ANC veterans and civil society members met at the steps of the Concourt on Wednesday and demanded that President Jacob Zuma resign.
Concourt stated that Zuma might have been following wrong legal advice but that did not detract from the illegality of his conduct.
ANC MPs voted to keep Zuma in the power seat to ensure their own survival, writes Matuma Letsaolo.
The National Assembly motion to remove Jacob Zuma as president was lost on Tuesday evening, with 233 votes against his impeachment.
On Tuesday the Presidency issued a statement saying the Concourt did not find that President Jacob Zuma broke his oath of office. Experts disagree.
Opposition MPs demanded that Parliamentary Speaker Baleke Mbete recuse herself as they said she was implicated in the Concourt's Nkandla judgment.
While the process to impeach a South African president is straightforward, there is one big hurdle to face first.
The SA National Defence Force also warned against using its members to advance or pursue political ambition, saying it would not be tolerated.
Finance Minister Pravin Gordhan said on Monday that the ANC needs to rediscover and reclaim its original purpose.
"The president humbled himself and apologised to the nation," ANC secretary general Gwede Mantashe said on Friday.
Once the case got to the Constitutional Court Zuma had to concede almost at once. This battle of Stalingrad was over.