The Senate County Public Accounts and Investment Committee (PAIC) has raised suspicions that some of the documents presented after the auditing period might have been doctored, to sanitise governors who could not account for public funds.
The senators, therefore want to visit Machakos County to establish if projects funded by public funds actually exist.
Senators John Lonyangapuo (West Pokot), Kimani Wamatangi (Kiambu), Boni Khalwale (Kakamega), and George Khaniri (Vihiga) observed that the auditing process is clear and expressed disappointment that some county bosses were denying the auditors the required evidence.
They claimed some governors might use public funds to campaign ahead of next year's general election.
This follows concerns that some governors might have been cleared on the basis of receipts provided to the auditor general when they had done little on the ground.
Machakos Governor Alfred Mutua was on Thursday asked to clarify why he purchased 40 greenhouses for Sh42.5 million from Green Life K. Ltd, as flagged out by the auditor general.