The Narcotics Control Bureau on Thursday arrested four pharmaceutical distributors in connection with an illicit internet pharmacy case.

In a statement, the NCB Zonal Director S. Davidson Devasirvatham said that the agency had registered a case on September 26 this year in Villuppuram and arrested two persons, including Russian national Alexander Vyukhin alias Alex.

The suspects were involved in an international online pharmacy trafficking business group.

Based on further investigation, police arrested four pharmaceutical distributors. They were remanded in judicial custody.