Based on a tip-off, the DRI, Bengaluru, intercepted one consignment booked through courier at Bangalore International Airport.
On detailed examination of the consignment kept in 15 cartons, around 25 kg of white coloured powder believed to be pseudoephedrine was found concealed in the inner walls of the boxes
The officers of the Narcotics Control Bureau received an anonymous tip off about the 40-year-old accused peddling loads of contrabands.
One pistol, 80 rounds of ammunition, two magazines, and two rounds of 12 bore along with three mobile phones have also been recovered from him.
The accused were caught while trying to sell the drugs to college students.
Singh was arrested driving a commercial truck on the Peace Bridge from Canada to the US at Niagara Falls in the upstate New York.
The federal anti-narcotics agency has expressed concern over the high number of Nigerian nationals involved in drug smuggling in the country.
With the arrest of nine persons near Thondi on Wednesday night, the district police claimed to have busted a drug smuggling racket.
One of the main suppliers that shut down is in Wuhan, the epicenter of the global outbreak.
The sleuths launched the operation following a tip-off that sale and abuse of ganja and other drugs was high among migrant workers in Nettoor.