Four foreign nationals and a luxurious house near Delhi – a detail that didn’t mean much to anyone until it was known that the team of four was using the property to produce “fine-quality” banned methamphetamine drugs.

The lab at the “luxurious and lonely private place” at Alestonia Estate in Uttar Pradesh’s Greater Noida was busted by the Delhi Police on Tuesday. The police recovered 445 grams of fine-quality banned methamphetamine drug and 20.5 kg of raw materials that included one kg of pseudoephedrine – an ingredient for the illicit manufacture of methamphetamines. Sophisticated equipment, including a heating mantle machine and high-quality face masks, were also recovered from the lab.

Nigerian national Eze Uchenna James (49), Alitumo Ifedi Shedrack (28), Eze Ibe Emeka Chibuzo alias Iko (56) and Kenyan national Ivo Osita alias Usta alias Osey (44) have been arrested, police said.

Out of the accused, Eze, Alitumo and Ivo were previously arrested and convicted in drug trafficking cases and were out on conditional bail, according to Deputy Commissioner of Police (Dwarka) Ankit Singh.

The drug bust was part of an ongoing operation by the Delhi Police against the suppliers of narcotics substances.