Hard border would 'see police targeted'
A Brexit hard border between Northern Ireland and the Republic would place police officers "in the terrorist firing line", it has been warned.
Head of the Northern Ireland Police Federation, Mark Lindsay, said physical border posts would make officers easy targets for terrorists and harm police and community relations.
"By definition, hard Brexit is physical barriers or boundaries.
"No matter who is resourcing them, whether it's Customs and Excise or the Border Agency, there's always going to be some element of security threat around it given the nature of the areas that we will see those put up in.
"That will then become incumbent on the police to provide the protection for those agencies," Mr Lindsay said.
He added: "That puts our officers into the firing line. Their patterns become very predictable.
"It makes them a predictable target for anybody who wants to attack them from a terrorist point of view. That is our main concern."
During the Troubles there were military checkpoints on main border crossings and security forces made the remaining crossings impassable.
By 2005, during the implementation of the 1998 Good Friday Agreement, these controls were removed.
Sinn Fein leader Gerry Adams has claimed leaving the EU will destroy the Good Friday Agreement.