text: all such powers under the emergency law now require reasonable grounds for suspicion, and persons detained in Northern Ireland under the Prevention of Terrorism (Temporary Provisions) Act 1989 were given a statutory right to have someone notified of their arrest and whereabouts, and to have access to legal advice. Police powers in Scotland 116. The general powers available to the police in Scotland are established primarily under common law, supplemented by various statutory provisions. ' main police powers in Scotland are as follows: . . !a)f StQP search: the police may stop and search any person or vehicle for stolen property if they have reasonable grounds to suspect possession of such articles; p »'sr-i art-s - „ CCPR/C/58/Add.6 page 27 generally empowered to enter premises without a warrant, although they may do so in the case of a very serious crime and great urgency. Having obtained a warrant from a justice, the police may enter premises, if necessary by force, and search them for items relating to the specific offence, and may seize any such items bearing on the presumed guilt of the suspect. The police may search any person who has been formally apprehended; (c) Detention: the police may detain for questioning a person in respect of an imprisonable offence, but the detention may not last longer than six hours, at the end of which time the suspect must either be charged or released, and he may not be detained again in connection with the same offence; (d) Questioning: every person who is detained in policy custody may be searched. Once a person has been arrested and charged, he may not be questioned further about the alleged crime, although he may make a voluntary statement which would be admissible as evidence. A person detained for 
analysis: The text appears to be discussing the powers and procedures of law enforcement agencies in Scotland and Northern Ireland, specifically in relation to search and seizure, detention, and questioning of individuals. It does not seem to be related to any specific economic, environmental, or scientific issue.