Earlier, Directorate of Revenue Intelligence officials questioned the singer extensively to find out where the money came from and why it was not declared.
According to the sources, the money he was carrying was received for his seven performances. On the basis of information, the investigating agency carried out raids at forex dealers premises in Andheri.
DRI officials have already conducted searches at the premises of "Eyeline Telefilm and Events in Mumbai, owned by Chitresh, elder brother of Bollywood singer Aadesh Shrivastava.
Rahat and his 16-member troupe were detained for allegedly carrying about Rs. 60 lakh of undeclared foreign currency.
Indian laws allow up to 5,000 dollars in cash, or 10,000 dollars in traveller''s cheques to be taken abroad.
