Police said the Rs five crore seized from Sai's aides was allegedly meant to be given as bribe to cops, doctors and judicial officials.
"PSI C K Kumbhani, posted at Detection of Crime Branch (DCB), Surat, was detained along with five other Narayan Sai aides who tried to bribe the police to weaken Sai's sexual assault case," Deputy Commissioner of Police (Crime) Shobha Bhutada said.
PSI Kumbhani was also detained for demanding money, promising that he would distribute it to police officers, doctors and judicial officials in order to weaken the rape case, the police said.
Narayan Sai, 40, is in judicial remand in connection with a rape case against him.
Sai was brought to the city on December 4 after he was arrested by the Delhi Police from the Delhi-Haryana border, along with his two aides after a car chase.