The Bihar government in its written submission to the Supreme Court on Thursday said that on account of political pressure in Maharashtra, neither an FIR was lodged nor any cooperation was provided to Bihar Police in the case in connection with the death of actor Sushant Singh Rajput.

The Supreme Court has reserved the order on the plea of main accused Rhea Chakraborty seeking transfer of the case registered in Patna to Mumbai.

On Tuesday, the apex court reserved the order and asked all the parties in the case to file their written submissions.

"It is apparent that it is on account of political pressure in the State of Maharashtra that neither the FIR has been registered by the Mumbai Police nor did they extend any cooperation to Bihar Police in discharging their obligation to conduct investigation expeditiously," said the Bihar government in its submissions before the top court.

Senior advocate Maninder Singh, representing the Bihar government, had argued on similar lines.

Criticizing the quarantine of senior Bihar police officer in Maharashtra, the government said, "Whereas on the one hand, the State of Bihar and its officials had acted with all sense of responsibility and regard to authorities of State of Maharashtra, sadly, it has met with complete absence of reciprocation by similar conduct by the authorities of the State of Maharashtra."

The written submissions also cited that Rhea in the transfer petition relied upon a tweet to the Union Home Minister requesting for investigation by the CBI. "Even in the Additional Affidavit, Petitioner has stated that she has reiterated for investigation by CBI," said the Nitish Kumar government.

The state government argued that the attention of the apex court is also invited to the provision of Section 406 of the CrPC, whereunder it has been envisaged to make a prayer for transfer of a case. Whenever there is information regarding commission of a cognizable offence, u/s 154(1) Cr.P.C. it is mandatory to register an FIR and conduct investigation immediately and expeditiously.

"No doubt or dispute with regard to jurisdiction would permit, in any manner whatsoever, to cause any impediment in the expeditious conduct of the investigation. It is in this background that Section 406 provides for transfer of the case and not for transfer of the investigation," said the written submissions.

The state government urged the apex court to reject the transfer petition filed by Rhea. "It deserves to be rejected/disposed of by the orders of this court.

"In the facts and circumstances of the present case, it is humbly submitted that no impediment would deserve to be allowed to come in the way of the CBI to undertake and complete the investigation expeditiously," said the Bihar government.

The 34-year-old actor was found dead in his Bandra flat on June 14. His father registered an FIR in a Patna police station on July 25 accusing his live-in partner Rhea and a few others of abetment to suicide and misusing Rs 15 crore from Sushant's bank account. The ED took over financial probe involved in the case on July 31. The CBI took transfer of investigation from Bihar Police on August 7.