The ICAC has transferred to the Department of Justice evidence files relating to its investigation into a breach of the Witness Protection Ordinance.
The investigation involved controversial raids on seven newspaper offices, and the arrests of two lawyers and four others last month.
Sources told the South China Morning Post the Independent Commission Against Corruption was seeking legal advice from the Department of Justice on how to proceed with the cases based on the evidence gathered.
A department spokeswoman said she could not comment on individual cases, and it was a matter purely between the two bodies.
A spokeswoman for the ICAC said it was standard practice to pass on evidence files to the department to seek legal advice once investigations were completed.
The move coincides with the anti-graft body's appeal against a High Court decision in favour of Sing Tao Daily, which begins today.
