Gachagua and Jenne Enterprises Limited were involved in a suspected complex scheme of money laundering.
The historic stadium was closed for renovations in 2017 after Kenya was chosen to host the 2018 African Nations Championship (CHAN).
In January 2018, Poshy Queen denied claims that she underwent hips enlargement in China.
The 11-member committee led by Kakamega Senator Cleophas Malala found that allegations levelled against Waiguru were not substantiated.