The Lucknow bench of the high court comprising Chief Justice D Y Chandrachud and Justice S N Shukla passed the order on a PIL by social activist Nutan Thakur.
The petitioner 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.
Thakur had alleged that she had filed a supplementary affidavit giving facts, including details of various alleged false companies floated by Yadav Singh for siphoning off illegal money.
The court also directed CBI to include people associated with Yadav Singh in its probe.
The state government had suspended the Noida Chief Engineer on December 8, 2014.