The case against Prothom Alo Senior Reporter Rozina Islam filed with Shahbag Police Station, has been transferred to Detective Branch of Police.
Mishu Biswas, additional deputy commissioner of Dhaka Metropolitan Police's Detective Branch's Ramna division confirmed the matter to The Business Standard on Wednesday.
Prothom Alo Senior Reporter Rozina was kept confined at the health ministry for more than five hours on Monday before being handed over to police.
Later, she was shown arrested in the case on charges of spiriting away "important" documents.
Investigative journalist Rozina, known for dozens of ground-breaking reports in her career, was charged with breaching the Official Secrets Act 1923.