Besides the alleged coup d'etat by his deputy, Mugabe is facing a more stubborn threat that he cannot eliminate by political retribution - the crumbling national economy.
Witnesses told Studio 7 that five people travelling in a Zanu-PF vehicle threw the fliers inscribed 'Vote of No Confidence Mugabe'.
Kudakwashe Bhasikiti has added his voice to the chorus of Zimbabwean politicians who have described Mr. Mugabe as having the divine right to rule the Southern African country.
Party members said to be backing a faction led by Justice Minister Emmerson Mnangagwa were on the campaign trail Monday urging party supporters to vote out Vice President Joice Mujuru
Various African countries, including Swaziland, Tanzania, Zambia and several others, were represented by high-powered delegations at the event.
Sibanda was arrested Friday afternoon by detectives in Harare who picked him up from his Nyamandlovu farm, Matabelaland North province.
Most people say the current studies at primary and secondary schools are so academic that they do not fully equip students for real life situations.
Zimbabwe Independent editor Iden Wetherell says the Zanu-PF debacle is hard to ignore.
Senior Assistant Commissioner Charamba confirmed the arrest to the state-controlled Herald newspaper though not giving more details.
If adopted, this will complete the purging of Vice President Joice Mujuru and her allies from key party organs such as the Central Committee and the Politburo.
Sikhala says after being released, he later received a telephone call informing him to surrender himself to the police in Harare.
The Zanu PF congress is penciled to begin on Tuesday and ends on Sunday with some delegates expected to be housed at some schools in the capital.