RAB-11 confirmed the matter on Tuesday afternoon through a press release signed by additional police super Jasim Uddin Choudhury.
The detained persons are: Nizam Uddin, 39, Khadem Hossain, 30, and Aminul Islam, 18.
On information, a team of RAB raided an unauthorised medicine factory in Sadipur area on Monday afternoon and detained three persons.
They have set up a factory under the name of ‘Global Gain Consumer Product Limited’ and manufactured fake medicine of coronavirus named ‘Niharika Manna Powder’. Legal action against the accused is underway.