The arrestees are Sukumar Mridha and his daughter Anindita Mridha.
ACC Deputy Director Md Salauddin said they started interrogating the duo at 10 am.
Also read: Confiscate wealth of PK Halder: HC
Halder reportedly amassed Tk 3,600 crore and laundered the money abroad while performing his duties as director at ILFSL.
Besides, on January 8, the Anti-Corruption Commission also filed a case against Halder for acquiring wealth of around Tk 275 crore beyond any known income sources and money laundering.
Also read: Travel ban imposed on 25 accomplices of PK Halder
In his appeal, Haldar who fled to Canada after amassing the money, said that he wanted to return for providing help to recover the amassed money of ILFSL and sought security after his return back home.
The High Court on January 22,2020 ordered the confiscation of properties, freezing of bank accounts and passports to be seized of Halder, also former managing director of NRB Global Bank Ltd and 19 others including his mother, wife and brother.
Also read: Arrest PK Haldar immediately after he returns: HC
After hearing appeals of seven investors of ILFSL, the court also imposed restrictions on them to leave the country. However, Haldar managed to flee to Canada.