The Czech government has proposed that three central European states send hundreds of troops and police to help protect Hungary's borders against a migrant influx into Europe's Schengen passport-free travel zone, officials said on Friday.

The central Europeans have stressed the need to secure the European Union's outer borders as the basis of any response to the inflow of hundreds of thousands of refugees this year. Hungary's position is seen as pivotal as it forms the external boundary of the EU's Schengen passport-free travel zone.

"Our government is prepared to help Hungary with protection of the Schengen border. We are proposing joint V4 action," Czech Prime Minister Bohuslav Sobotka said on his Twitter page, referring to the Visegrad 4 group that compromises his country, Slovakia, Poland and Hungary.

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