How long will CBI drag Jagan case?

It looks like the Central Bureau of Investigation does not want to end the investigation  into the alleged illegal assets case of YSR Congress party president Y S Jaganmohan Reddy at the earliest, but wants to drag it as long as possible so that he would remain in jail continuously.
It was evident from the way the CBI filed yet another supplementary charge-sheet in the special CBI court in Hyderabad on Tuesday, charging three major pharmaceutical companies with making illegal investments in Jagan’s business empire. It has already filed first supplementary charge sheet in July 2012 to the main charge sheet which was filed on March 31, 2012. So far, it has filed four charge sheets in the Jagan’s case in the last one year. Though the Supreme Court directed that the CBI filed a single and final charge sheet in the case after completing its investigation, it is planning to delay the process in the name of filing supplementary charge sheets.
Ironically, there is nothing new in the charges made in the latest supplementary charge sheet, as all of them  were earlier made in the first one itself. The only difference is that the CBI had submitted a report obtained from Registrar of Companies to prove that the investments made by three companies – Aurobindo Pharma, Hetero Drugs and Trident Life Sciences – were against the Companies Act.
It remains to be seen how long the CBI will drag this case. There is a hope that it might submit the final charge sheet in the next two or three weeks, as the deputation of CBI joint director V V Lakshminarayana will come to an end by this month-end.