Acting on a tip-off, a team of Narcotics Control Bureau on Monday intercepted an SUV bearing an Indian number plate in Kalanki on the outskirts of Kathmandu and nabbed Ramesh Kumar.
Kumar, a permanent resident of Motihari in Bihar, was found with 1,200 ampoules each of buprenorphine and diazepam besides 1,100 ampoules of phenargan from him, according to a press release issued by the police headquarters.
The drugs were wrapped in newspapers and kept in a plastic bag, it said.
"He bought the controlled pharmaceutical drugs from the India-Nepal border and sold them in the main cities across the country," the police statement said.