Izuchukwu Augustine (27) was apprehended from Rajouri Garden on Saturday allegedly with the contraband following a tip off, they said.
Augustine has been living in India since 2009. He allegedly bought cocaine from one Smith, a fellow Nigerian, and sold it further to the clients in South Delhi and New Delhi areas.
Efforts are being made to trace out his associate Smith and also clients of Izuchukwu Augustine, police said.