(CNN) Turkey will not allow the Dutch ambassador to Ankara to return to Turkey and has suspended high-level diplomatic relations between the two countries, a top government official has said.

Deputy Turkish Prime Minister Numan Kurtulmus announced the freeze in Ankara Monday amid an escalating row over Turkish officials' access to the Netherlands.

Over the weekend, the Netherlands refused to allow Turkish Foreign Minister Mevlut Cavusoglu to visit Rotterdam for a political rally.

"Why this time am I a terrorist? Are the Turks living in this country terrorists?" Cavusoglu asked in an interview Monday with CNN's "Connect the World."

Soon after Cavusoglu was refused entry, the Dutch stopped Turkey's Family Affairs Minister Fatma Betul Sayan Kaya from entering the Turkish consulate in Rotterdam. She was later escorted out of the country.

Violent clashes erupted after the two ministers were prevented from addressing rallies in Rotterdam, where they hoped to drum up support for an April 16 referendum to give greater to Turkish President Recep Tayyip Erdogan.

Refugee deal at stake?

The deepening diplomatic row has prompted threats from Turkey to pull out of the EU-Migrant deal.

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"Turkey should reconsider the land passage issue again," Turkey's EU Minister Omer Celik was quoted as telling journalists Monday by Turkey's state-run news agency Anadolu.

Struck last year, the deal was designed to stem the flow of migrants to Europe, in exchange for billions in funding and relaxed visa rules for Turks.

Under the deal, the EU accepts one Syrian living in a Turkish camp for each migrant returned to Turkey in a "one-for-one" exchange, capped at 72,000 people. Anyone who crosses into Greece illegally will be sent back to Turkey.

No explanation, minister complains

In the interview with CNN on Monday, Cavusoglu said he'd been given no explanation as to why he was stopped from entering the Netherlands. The Dutch said it was due to public order and safety concerns.

"Is there any one single Turkish Turk radicalized? They say no. So what is the security problem then? They don't give me any detail, I am the foreign minister of Turkey. I am not a terrorist. This is just excuse, unfortunately, to hide the real reasons," he said.

Turkish Foreign Minister Mevlut Cavusoglu has demanded answers from the Dutch.

Cavusoglu suggested that a rise in racism, Islamophobia and xenophobia in the Netherlands and other European countries was to blame.

The Dutch will vote in a general election on Wednesday, and far-right candidate Geert Wilders' anti-Islam, anti-EU Party for Freedom (PVV) is expected to make a strong showing.

Cavusoglu also said the Netherlands and other European countries wished to "obstruct" the yes campaign for April's referendum on the Turkish constitution

The EU took the step of warning Turkey about the ramifications of the referendum, issuing a statement which said that consolidating the powers of the presidency would have implications for Turkey's long-held goal of EU membership.

"The proposed amendments, if approved at the referendum of 16 April, and especially their practical implementation, will be assessed in light of Turkey's obligations as an EU candidate country and as a member of the Council of Europe," it said.

Nazi comments echoed

After the foreign minister's visit to Rotterdam was blocked, Erdogan reacted angrily, comparing the Dutch government to Nazis. In response, Dutch Prime Minister Mark Rutte said Erdogan's remarks were inflammatory and demanded an apology.

A Dutch riot police officer tries to get his dog to let go of a man during a demonstration at the Turkish consulate in Rotterdam Sunday.

The Netherlands lost more than 200,000 of its citizens when it was occupied by Nazi Germany in World War II.

Dutch Foreign Minister Bert Koenders believes it is now "quite impossible" for members of the Turkish government to campaign in the Netherlands for the upcoming referendum, he told CNN's Hala Gorani in an interview Monday.

"We have now a situation which I think is unworkable," Koenders said.

Koenders said that over the weekend he spoke on the phone with Cavusoglu about the situation, and he told his counterpart that the Dutch found the Nazi comments insulting.

"We were the victims of Nazism in the second world war," Koenders said.

Appearing to defend Erdogan's inflammatory remarks about Nazis, Cavusoglu said: "Such attitudes, such policies and the violations of the European standards and the values and the Vienna conventions never happened since World War II. It didn't happen even during the World War II and it didn't happen maybe even during the Nazi (era) ... so that is why we are making the comparison."

On Monday, the Dutch issued travel advice via Twitter for Dutch citizens in Turkey telling them to "avoid demonstrations and be alert" amid the bitter row between the two countries.

But Cavusoglu said: "We will not target the Dutch people and we will not harm them because it is not their mistake. And the Dutch people are friends of Turkey and so many tourists are coming to Turkey and we have been friends for 400 years."