An inquiry has been launched to examine cross-border co-operation on policing, security and criminal justice between the UK and Ireland post-Brexit.
The NI Affairs Committee inquiry will examine the implications of Brexit for cross-border criminal activity.
It will also explore alternatives to existing EU agreements and identify barriers to co-operation from January 2021.
The announcement comes as the latest EU-UK trade negotiations begin.
When the Brexit transition period ends on 31 December, the UK will lose access to the EU agreements and processes that have underpinned cross-border cooperation for years.
Agreements, such as those allowing use of the European Arrest Warrant and access to EU data and information-sharing, meant criminals could be sought across jurisdictions and brought to justice.
Chair of the Northern Ireland Affairs Committee Simon