The Home Office said tonight that 13 people found in a lorry in Kent, whose nationalities have yet to be confirmed, will be questioned later.
Officials had this warning for lorry drivers entering the UK:
Drivers and hauliers must take adequate steps to secure their vehicles from illegal immigrants trying to smuggle themselves across the border.
If a driver does not take these steps - and is found with people hiding in their vehicle - they will be issued with a civil penalty.
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Here are the permutations as the Brexit debate continues.
A group led by the former attorney general Dominic Grieve is reported to be seeking to suspend the Article 50 withdrawal process.
Brexit makes headlines in Sunday’s papers as the Prime Minister prepares to set out her Plan B on Britain’s departure from the EU.