Police officers who were involved in the 1989 disaster, in which 96 people died, could potentially face criminal charges if the IPCC uncovers evidence of wrongdoing, reports The Independent.
However, Sir Norman Bettison, is unlikely to face any disciplinary action, after he announced he will be stepping down as Chief Constable of South Yorkshire Police in March.
More top news
A wanted man asked police to use a "better photo" instead of the "horrible mugshot" they used in a Facebook appeal.
Paul Dadge become the unwitting face of the 7/7 rescue effort after a picture of him helping a woman in the aftermath went around the world.
Speaking to ITV News' Mark Austin on the anniversary of the London bombings, ex-PM says nations around the world will need to respond.