Edwin Ndubusi was apprehended from Shivaki Marg yesterday on a tip-off, DCP (Crime) Sanjay Kumar Jain said.
Ndubusi told police that after dropping out from school, he had started helping his father in farming.
"After the death of his father, he came to India in 2011 on a business visa. He was staying in Dwarka since then. He wanted to start export business of auto parts and hosiery items, but the business never took off.
"Six months ago, he met Richard, a fellow Nigerian, who used to meet him in a church in Uttam Nagar. Richard lured him into drug trafficking," Jain said.
Efforts are being made to trace out Richard and also clients of Edwin.