"Before completion of 90 days of the case, the CBI is bound to file the chargesheet in the court," senior public prosecutor Hemant Shukla told reporters here.
"Charge-sheet will be filed on or before May 26," he said, adding, there was no need to inform the CBI court as the agency got the legal limitation of 90 days after registering and arresting the accused.
Earlier, special CBI court judicial magistrate Shubhra Singh extended the judicial custody of all the five accused in the murder case of Shehla till May 26.
The accused - Bhopal based-interior designer Zahida Pervez, her colleague Saba Farooqui, Shakib 'Danger', Irfan and Tabish were produced before the magistrate.
On their way to the court, the two women accused remained tight-lipped and covered their faces with scarves as they faced a volley of questions from the media.
Shehla was shot dead outside her residence at the posh Koh-e-fiza locality in Bhopal on August 16, 2011.