Once investigators had narrowed the seat of the blast to the bathroom of Room 629, police began to track down everyone who had stayed in the room. This eventually led them to "Roy Walsh", a pseudonym used by IRA member Patrick Magee. Magee was tailed for months by MI5 and special branch, and finally arrested in an IRA flat in Glasgow. Despite days of interrogation he refused to answer questions - but a fingerprint on a registration card recovered from the hotel ruins was enough to convict him. He was arrested on 24 June 1985 with other members of an IRA active service unit while planning further bombings in England. Many years later, in August 2000, Magee admitted to "The Guardian" that he carried out the bombing, but told them he did not accept he left a fingerprint on the registration card, saying "If that was my fingerprint I did not put it there".