The Brihanmumbai Municipal Corporation (BMC) on Friday said it has allowed Bihar IPS officer Vinay Tiwari, quarantined here after arrival to oversee probe in actor Sushant Singh Rajput death case, to return to his home state. Tiwari, Superintendent of Police of Central Patna, has been exempted from quarantine protocols and allowed to return to his home state, an official said. Tiwari said BMC officials had quarantined the investigation, not him. Tiwari had reached Mumbai on Sunday to oversee investigation into the FIR filed against actress Rhea Chakraborty in the Sushant death case. On his arrival in Mumbai, he was asked to remain in quarantine till August 15 in view of the COVID-19 pandemic and was stamped as quarantined by the BMC.