Bangladesh Financial Intelligence Unit (BFIU) on Wednesday instructed banks to freeze accounts belonging to Salman F Rahman, along with those of his wife and son.
Banks were also instructed to suspend transactions across these personal accounts for an initial period of 30 days, according to a letter from BFIU.
The BFIU requested an update on the status of these accounts within five working days of the issuance of the letter.
Salman, a prominent Bangladeshi businessman, former MP and adviser to the ousted prime minister Sheikh Hasina, was arrested on August 13.
One of the banks with substantial exposure to Salman's Beximco Group is Janata Bank.
Salman's notorious legacy appears to have extended to his son, Ahmed Shayan Fazlur Rahman, who recently lost his directorship at IFIC Bank due to loan irregularities.