Gigaba has recently been under pressure in parliament as the home affairs committee continues to ask him tough questions about his role in allowing the wealthy Oppenheimer family to operate a private landing terminal at OR Tambo International Airport.
A draft report by the public enterprises committee on the Eskom inquiry has also recommended that Gigaba should be among 44 people that must be criminally investigated for corruption at Eskom.
Mthembu said if Gigaba had any evidence of anyone using parliamentary committees to tarnish his name‚ he should have reported the matter to him.
“The committees of parliament are not part of any plot. We want to make that clear. We do our work without any fear or favour. Nobody has brought any such insinuation before the chief whip‚” said Mthembu.