Mr Adams said officials from the Royal Mail's special investigation branch attended.

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An investigation by the army's Special Investigation Branch is under way.

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Det Ch Insp Tom Richards led the investigation by the Special Branch Investigations Team and the Kent Police Digital Forensic Unit.

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Kent Police said he was charged following an investigation by its Special Branch Investigations Team and the Kent Police Digital Forensic Unit.

BBC: Lewys Martin of Kent faces Oxbridge cyber attack charges

The ombudsman's team found 360 documents held by Special Branch that it believed were relevant to the Omagh investigation.

BBC: Ombudsman's investigation: Remit.

The BBC revealed that the original investigation was declared closed without investigators speaking to a Special Branch agent handler who used the name Lenny.

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