EU states seek extension of border controls within Schengen

Migrants walk in a muddy field at at a camp of makeshift shelters for migrants and asylum-seekers from Iraq, Kurdistan, Iran and Syria, called the Grande Synthe jungle, near Dunkirk, France, January 25, 2016. REUTERS/Yves Herman

AMSTERDAM (Reuters) - European Union countries have asked the bloc's executive to prepare for the extension of temporary border controls within the Schengen free-travel zone for up to two years, Dutch Migration Minister Klaas Dijkhoff said on Monday.

Struggling to control Europe's worst migration crisis in decades, some Schengen countries have reintroduced controls on the area's internal borders.