Submitted in response to written requests from the Inquiry, usually providing lists of questions to be answered. In most cases these formed the basis of questioning in public sessions, but in some cases they were read into the record (or taken as read) and the witness did not appear in person.
Given by witnesses invited by the Inquiry, normally after they have made written statements. These sessions could be viewed live online and sometimes on television news services, and the video recordings are part of the archive. The statements were usually released to the public after the public sessions.
At the time of giving evidence, Horgan was Emeritus Professor of Journalism at Dublin City University and the first Irish Press Ombudsman, a post from which he stepped down in 2014. His career has been in print and broadcast journalism, politics (as a member of the Irish Senate) and academia.