EACC says Governor Waititu being probed over Sh588m irregular award of tenders, fraud, conflict of interest and money laundering.
Reports have indicated that Governor Waititu is being investigated for the irregular award of tenders valued at Kshs588 million to companies associated him.
EACC also confirmed that Waititu's family members, directors of private companies, and ten senior employees of the County Government were being investigated.
Preliminary investigations show that contractors paid monies to senior County officials, their companies or relatives through proxies.
This comes barely hours after the Kiambu County boss was arrested on Thursday by EACC detectives following an early morning raid on his homes.
During the searches, EACC detectives are said to have recovered valuable evidence relevant to the investigations.
The suspects are currently being interrogated at the Integrity Centre for further investigations.