Johannesburg city manager Ndivhoniswa Lukhwareni reportedly told the Alex inquiry on Wednesday that he had authorised the demolition of at least 80 houses built on illegally occupied land.
In one instance during the inquiry, Lukhwareni said he had the understanding that the targeted structures were either incomplete and/or unoccupied.
Alexandra residents were left destitute without houses when the Red Ants, the police, and Johannesburg metro police department (JMPD) moved in to demolish houses in Stjwetla, Ward 109, on Thursday.
The South African Human Rights Commission and the office of the public protector on Monday convened the third session of the inquiry into socio-economic conditions in Alexandra, following weeks of service delivery protest in the area prior to the May 8 general elections.
The demolition of houses has become a political football with the African National Congress-led provincial government blaming the Democratic Alliance-led city of Joburg administration for carrying out the demolitions.
But the city of Joburg had said that the demolition, which sparked protests by residents, appeared to have been conducted without correct procedures being followed.
Protesters started to block Gautrain operations on Friday following demolitions in Alexandra.
Gauteng member of the executive council (MEC) for human settlements, urban planning and cooperative governance and traditional affairs (Cogta), Lebogang Maile, also visited Alexandra over the weekend and assisted more than 160 destitute families were assisted with supper and foodstuff.