The Portuguese penal procedure legislation already contains special instruments on the investigation of offences of terrorism, and, in most recent years, specific legislation on the protection of witnesses was approved (Law no. 90/99 of 14 July).
葡萄牙刑事诉讼程序法已包括有关恐怖罪行调查的具体文书，最近几年已批准专门保护证人的法律（7月14日第90/99号法令）。