Greece has denied the European Union's claims regarding the migrant and refugee crisis.

According to BBC, Greece has admitted feeling pressured over the migration issue, but has vehemently denied that there are attempts intended to suspend the country from the Schengen passport-free zone or open border travel pact because of its failure to control the surge of migrants entering Europe.

Greece was warned that it could be dumped from the 26-member zone of the 1985 Schengen Accord if they fail to address the problem before an EU leaders' summit in mid-December, BBC noted.

Some central European officials, primarily Slovak Prime Minister Robert Fico, have proposed removing Greece from Schengen, Reuters wrote. Diplomats and EU officials said that several governments have informally addressed the probability, but it would prove to be a symbolic move that has no significant effect on migration.

Over 740,000 people have arrived on the shores of Greece in 2015 seeking asylum, BBC further reported. A high-ranking EU official said that children are dying on Greek beaches because of a shortage of medical assistance. Greece is also accused of being slow to consult EU experts and improve the registration of refugees.

"It is not said officially, but there is pressure," Greek Migration Minister Yannis Mouzalas said of the Schengen issue, as quoted by Reuters. "These are very common lies for Greece ... This blame game towards our country is unfair."

Luxembourg Foreign Minister Jean Asselborn said that he conveyed a suspension warning when he visited Athens this week, but he urged Greece to work with EU agencies so it wouldn't be dismissed from Schengen.

"We have to make sure that people aren't talking in Brussels about ... pushing Greece out of Schengen," Asselborn told Reuters. "That's something we must avoid at all costs."

Greek government spokeswoman Olga Gerovasili insisted that Greece's suspension from Schengen had never been mentioned in the EU framework. In her statement, she said that "European circles insist on distorting reality and keep believing that Europe's future can be built on phobic reflexes, fences and exclusion," BBC added. Gerovasili appeared to be laying the blame on Slovakia, which pushes for tighter broader controls.

"These same circles have been promoting during the last days this hostile environment towards Greece by unacceptably threatening the country with exiting the Schengen Treaty," she said, as quoted by BBC. Lesbos is also struggling with the large numbers of refugees arriving on the islands, while the northern border of Macedonia is heavily populated with camps of refugees.

On Tuesday, clashes occurred on the Greek-Macedonian border when Macedonian riot police fired tear gas to drive away around 1,000 mostly Pakistani migrants forcefully attempting to cross a newly erected border fence, Reuters added.