In its ongoing onslaught against the drugs mafia, the Narcotics Control Bureau (NCB) carried out raids in Mumbai and Navi Mumbai and nabbed a Nigerian national with 260 gms Heroin and 22 gms Cocaine, a top official said here on Friday.

NCB Zonal Director Sameer Wankhede said the Nigerian -- who is currently being interrogated -- is the 8th foreigner, with seven others of different countries caught and arrested in the past one year.