# The Channel Tunnel (International Arrangements) Order 1993, 

Extent: E+W+S+N.I.

Without prejudice to the application of Article 3 of the Treaty and of Part II of this Protocol, the police and customs officers of one State may in accordance with their own national laws make arrests on the territory of the other State in cases where a person is found committing, attempting to commit, or just having committed an offence:
(a) on board any train which has commenced its journey from one State to the other and is within the Fixed Link; or
(b) within any tunnel described in Article 1(2) of the Treaty.

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Source: https://www.legislation.gov.uk/uksi/1993/1813/schedule/2/part/VI/crossheading/3 (the official version)
Page: https://openlegislation.uk/channel-tunnel-international-arrangements-order-1993/schedule-2/part-VI/crossheading-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.