India, March 16 -- The Delhi Police has busted an interstate network involved in the illegal supply of psychotropic medicines and arrested four people while seizing a consignment of banned drugs, an official said on Sunday.

The accused have been identified as Salman Khan of Punjab's Patiala, Vipin Kumar Pal of Delhi, and Abdul Rehman and Ravi Garg, both residents of Uttar Pradesh, he said.

On March 7, a police team deployed received inputs that Vipin Kumar Pal was involved in the illegal supply of psychotropic medicines such as Alprazolam and Tramadol, the police said.

Police were informed that Pal would deliver a consignment to Salman Khan near Yudhishthar Setu towards Kashmere Gate between 7.30 pm and 8.30 pm.

"Acting on the tip-off...