Diko was appointed to that position in June 2016 and worked alongside former party spokesperson Zizi Kodwa.
The ANC announced that it has appointed Donovan Cloete as acting national manager in its department of information and publicity with immediate effect.
“With vast experience in the communications industry‚ the ANC is confident that Comrade Donovan will keep the unit intact and effective. We wish him well in the execution of his duties‚” Mabe said.
Diko’s resignation comes days after it was announced that at least four ANC national executive committee members would be full time at Luthuli House to strengthen the party’s political machinery ahead of next year’s general election.