Health ministry on Tuesday formed a three-member committee to investigate the incident of harassing Prothom Alo's Senior Reporter Rozina Islam at the Secretariat.
The committee, led by Health Service Division's Joint Secretary Saifullalil Azam, has been asked to submit a report within three working days.
Other members of the probe body are- Deputy Secretary Md Abdus Salam and Mohammad Masudur Rahman Molla.
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.
Rozina Islam is known for her strong reportage of official corruption. She has recently made several investigative reports revealing corruptions in the health sector.