KASTANIES/LESBOS, Greece (Reuters) - European Union officials on Tuesday promised more cash for Greece during a visit to its border with Turkey which tens of thousands of migrants and refugees have been trying for days to breach.

Greek Prime Minister Kyriakos Mitsotakis, European Commission President Ursula von der Leyen, European Council President Charles Michel and European Parliament President David-Maria Sassoli fly over the Greek-Turkish border, in the region of Evros, Greece, March 3, 2020. Greek Prime Minister's Office/Dimitris Papamitsos/Handout via REUTERS

The officials urged Turkey to abide by a 2016 deal which requires it to keep the migrants on its soil in return for EU aid. After an upsurge in fighting in Syria last week, Ankara says it will no longer stop migrants who want to reach Europe.

Greek riot police have used tear gas against the migrants at its Kastanies border post, while the coastguard has tried to stop boats transporting migrants to Greece’s Aegean islands. A Syrian boy died on Monday after his boat capsized in the area.

“The situation at our border is not only an issue for Greece to manage, it is the responsibility of Europe as a whole,” the head of the EU’s executive Commission, Ursula von der Leyen, told a news conference at Kastanies.

“We will hold the line and our unity will prevail,” she said after touring the area with Greek Prime Minister Kyriakos Mitsotakis and the heads of the European Council and Parliament.

Von der Leyen announced additional aid of 700 million euros ($782.95 million) to help Greece deal with the migrant crisis.

Brussels is desperate to avoid a repeat of the 2015-16 crisis, when more than a million migrants entered the EU from Turkey via the Balkans, straining European security and welfare systems and boosting support for far-right parties.

Greek troops and riot police remained on high alert along the Turkish border on Tuesday, though there were no reports of significant new clashes with the migrants.

“There were only a few attempts today (to cross the border). Let’s hope they get the message,” a machine gun-toting army officer told Reuters at the Kastanies border post.

Army jeeps patrolled the area and roads leading to the Evros river which marks the Greek-Turkish border remained shut.

Signs of the crisis also surfaced in Cyprus, where a boat carrying 101 Syrian migrants reached the southeastern coast of the eastern Mediterranean island, an EU member state, late on Tuesday, Cypriot police said.

By contrast, the border that Turkey shares with EU member Bulgaria, to mainland Greece’s north, was quiet.

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GREECE, TURKEY AT LOGGERHEADS

The crisis has badly strained relations, never good, between Ankara and Athens.

Mitsotakis accused Ankara of deliberately encouraging migrants to head to the border to “promote its geopolitical agenda and divert attention from the situation in Syria”.

He also said these migrants were not fleeing the latest flare-up of fighting in Syria’s Idlib province but were people “who have been living safely in Turkey for a long period of time”. Many speak fluent Turkish, he added.

Bulgarian Prime Minister Boris Borissov, who maintains good relations with Erdogan, voiced hope the crisis could be overcome. “We have agreed to work with all our goodwill for good neighborly relations...to solve the conflict,” he said after meeting European Council chief Charles Michel and von der Leyen in Sofia.

French Foreign Minister Jean-Yves Le Drian also accused Turkey on Tuesday of using the refugees to “blackmail” Europe.

Turkish President Tayyip Erdogan infuriated Mitsotakis on Monday by accusing Greek border guards of killing two migrants and wounding a third, a claim denied by Athens.

On Tuesday, Turkish Foreign Minister Mevlut Cavusoglu said Greek forces were shooting migrants “in the back as they are running away”, but he provided no evidence.

Turkey, which hosts 3.6 million refugees from Syria’s civil war and faces another possible big influx as the fighting drags on there, says it cannot take in any more.

Human Rights Watch said it had received multiple reports that Greek border guards were pushing people back into Turkey, which could violate the right to claim asylum as well as a ban on returning people to where they would be unsafe, both of which are enshrined in international law.

The mood towards migrants on Greek islands such as Lesbos - once relatively welcoming - has soured since the 2015-16 crisis amid a sense that the Athens government and the EU are not providing sufficient support.

“It used to be the island of solidarity but it seems like the locals are exhausted,” said Charlie Meyers, a U.S. aid worker on Lesbos.

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