The Income Tax department will launch full-fledged assessment proceedings from January next year against those assessees, who have deposited suspicious amounts of money in banks post-demonetisation but have not filed their Income Tax Returns till now.<br/>'<br/>Officials said the Central Board of Direct Taxes has asked the taxman to finish the process of serving notices to such entities by December 31.<br/><br/>The IT department will initiate full-fledged assessment proceedings against these assesses from the latter part of January after the replies to the IT notices are received.<br/><br/>Those who attempted to show their black income as white and evaded tax would be prosecuted, officials added.The action is a part of the Operation Clean Money,<br/>initiated by the department early this year to specifically check black money instances in the wake of demonetisation.