Following the Brexit trade deal agreed in December, Spanish minister Arancha Gonzalez-Laya claimed Spain will be the “ultimate responsible and guarantor” for the application of Gibraltar within the Schengen area.
Ms Gonzalez-Laya insisted the number of European troops patrolling the British territory will be known when the UK and EU reach an international agreement.
Both Britain and Spain are hoping an agreement will be reached within six months.
But now, Gibraltar’s chief minister Fabian Picardo has hit back at these claims arguing he will never allow EU border guards.
He said: “I will never bring a law to Parliament that allows it.
“In fact, whatever the agreement or the treaty provides, no Frontex official will be able to operate in Gibraltar without the authorisation granted by an act of Parliament in Gibraltar.”
According to Mr Picardo, the preliminary agreement “respects each one of our red lines on sovereignty, jurisdiction and control”.
He reiterated: “You can be sure that there will be no consequences for sovereignty, jurisdiction or control.”
The chief minister went on to stress the sovereignty debate has “specifically been off the table in all discussions” relating to the agreement.
READ MORE: Brexit news: EU border guards set to enforce rules in Gibraltar
After this is, the Spanish authorities will decide whether to allow to deny entry into the Schengen space.
With regards to the airport, a facility will be created in which “Spanish and Gibraltarian officials will share space”.
Spain will also have “operational assistance from Frontex for tasks related to Schengen controls and the protection of external borders”.
Gibraltar is a British overseas territory but is also the subject of a territorial claim by Spain.
It was a subject of contention during the divorce talks where the Spanish government was accused of using Brexit to snatch back the territory.
Mr Picardo previously insisted the Rock could “easily” strike a deal with the EU if David Frost and Michel Barnier failed to reach an agreement.
Mr Picardo said: “The legalities are easy.
“The law is there to create the agreement that each relevant party wishes and the existing treaty obligations permit.
“There is nothing insurmountable for Gibraltar in that respect and in keeping with our red lines.
“But if we are in that territory, what is complex to start with will become devilishly difficult in some respects.”
Additional reporting by Maria Pallenberg