Greece extends wall on Turkish border as refugee row deepens

Police say mobile sirens and surveillance cameras also used to deter crossings into EU

Greece has begun extending a border wall along its frontier with Turkey to deter migrants from trying to enter the European Union, the Greek government has said, after a border standoff earlier this year which has helped drive Greek-Turkish relations to a dangerously low ebb.

A total of 16 miles (26km) of wall will be added to the existing 6 mile fence along the Evros River, which forms much of the Greek-Turkish border, the government spokesperson Stelios Petsas said on Monday.