(4)After completion of tax audit of any dealer under sub-section (3), the officer authorised to conduct such audit shall, within seven days from the date of completion of the audit, submit the audit report, to be called "Audit Visit Report", the assessing authority in the prescribed form alongwith the statements recorded and documents obtained evidencing suppression of purchases or sales or both, erroneous claims of deductions including input tax credit and evasion of tax, if any, relevant for the purpose of investigation, assessment or such other purposes.