All the three accused were residing in Delhi's Uttam Nagar area.
Two Nigerian nationals and a Kenyan woman were arrested for allegedly possessing 7.5 kg of heroin worth Rs 30 crore, police said on Saturday.
The two Nigerian nationals were identified as Martin Obum Fevor (30) and Ekene Kenneth Onyetobe (33) while the Kenyan woman was identified as Marium Mweke (36), said P S Kushwah, Deputy Commissioner of Police (Special Cell).
All the three accused were residing in Delhi's Uttam Nagar area, he added.
Acting on a tip off, the police laid a trap to nab Onyetobe who had come to ISBT Kashmere Gate at 11 pm on June 25 to board a bus for Punjab to deliver a consignment of heroin to a Punjab-based drug dealer.
Subsequently, the accused was arrested with three kg of high grade heroin, he said.
During interrogation, Onyetobe disclosed the names of his two associates. Later, Mweke was arrested with 2.5 kg of heroin near Mukarba Chowk bus stand on June 27, Kushwah said.
Fevor was also nabbed with two packets of heroin from his residence in Uttam Nagar on Friday, the officer said.
The accused used to supply high grade heroin in NCR and Punjab. These drugs were smuggled in India from Afghanistan and Pakistan, he said.
They have been supplying heroin to Punjab-based drug peddlers for the last one-and-a-half years and have already supplied more than 120 kg of heroin in Punjab alone, the DCP said. During further interrogation, the police found that in some cases, heroin was swallowed as plastic tape coated capsules, and after landing in India the carrier used to take out the capsules and deliver them to members of the drug cartel, Kushwah said.
Fevor admitted to have carried heroin from Afghanistan.
The carriers used to hide the contraband in a hidden cavity in pipes of trolley bags that could not be detected by scanners, the officer said.
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