The HC had on July 16 ordered CBI probe into the case of alleged corruption by Singh on a PIL, filed by social activist Nutan Thakur, accusing him of amassing property disproportionate to known sources of his income.
In her PIL filed before the High Court, Thakur had given details of Income Tax raids on Yadav's establishments in Delhi, Noida and Ghaziabad on November 27-28 last year and alleged recovery of illegal properties and sought a CBI probe into the matter.
The state government counsel had, however, opposed the PIL as not being maintainable and noted that the government had also constituted a judicial commission to probe the matter.
The state government had suspended the Noida Chief Engineer on December 8, 2014.