REUTERS/Jonathan Ernst/File Photo Acquire Licensing RightsWARSAW, Sept 25 (Reuters) - Poland will introduce checks on vehicles crossing the border from Slovakia, the prime minister said on Monday, in measures to stem the flow of immigrants. Meanwhile, Slovakia has been struggling with a surge in illegal migrants. The number of illegal migrants detained in Slovakia has increased nine-fold from a year ago to more than 27,000 so far this year, according to the country's interior ministry. Morawiecki said that Scholz's words could be a preparation for closing the border with Poland. Muller had said that the government does not rule out also strengthening controls on the border with Germany.

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Persons: Mateusz Morawiecki, Kamala Harris, Jonathan Ernst, Morawiecki, Piotr Muller, Muller, Olaf Scholz, adressing Scholz, Alan Charlish, Anna Koper, Andrew Cawthorne, Hugh Lawson, Alison Williams Organizations: Poland's, U.S, White, Washington , D.C, REUTERS, Rights, Law and Justice, Slovak, Thomson Locations: Washington ,, Poland, Slovakia, Warsaw, Polish, Germany