Part 4: Police Powers Chapter 1: Pre-charge Bail Section 57: Warrants of further detention: release
This section makes equivalent provision to section 56 in respect of those persons being released from police detention under section 43 or 44 of PACE, that is those who have had their extended detention authorised by a warrant of further detention (up to 72 hours from the "relevant time") issued by a magistrates’ court, which can be extended up to 96 hours from the "relevant time", or where the court refused to grant such a warrant or extension.