Officials said the network for "supplying drugs to Punjab youths" was busted by the Delhi zonal unit of the Narcotics Control Bureau (NCB) yesterday and the agency seized about 825 gms of the contraband.
NCB officials identified the Nigerian as Ifeanyi Okafor (36) who has been living on rent in Uttam Nagar area here after he came to India on a business visa that had expired in May this year, they said.
The Punjab-based youths have been identified as Rimpu (35), a resident of Muktsar, and Balwinder S (35).
The three were held while illegally transacting in 25gms of heroin in Uttam Nagar yesterday, they said.
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Sharma said Okafor was one of the major suppliers of drugs to Punjabi youths who had been coming to Delhi to procure their consignments from him.
"The agency had received a specific tip-off in this regard and was on the look out for Okafor for the past two months," he said.
The second person, Balwinder S, had recently sold off his vehicle for Rs three lakh and spent the entire amount to procure drugs, the agency claimed.
NCB is trying to identify the sources from where Okafor was procuring drugs in Delhi even as they suspect that indigenous heroin manufactured in parts of Uttar Pradesh was being smuggled into Delhi and subsequently reaching Punjab with the help of some African operatives, they said.