Greece blocks nearly 10,000 migrants at Turkey border.

Islamabad: : Greece has blocked nearly 10,000 migrants trying to enter from the border with Turkey over the past 24 hours, a Greek government source said on Sunday.

A massive influx of migrants -- many of them from Pakistan, Afghanistan and Somalia -- swelled along the border over the weekend after Turkish President Recep Tayyip Erdogan threatened to open its frontier to Europe.

He is seeking to pressure EU governments over the Syrian conflict after an air strike in Syria's Idlib province on Thursday killed dozens of Turkish soldiers.

A Greek government source said on Sunday its army and police had stopped thousands from entering its territory. "From 0600 Saturday morning to 0600 Sunday morning, 9,972 illegal entrances have been averted in the Evros area," the government source said, referring to the north-eastern region along the Turkey border.

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Officials say 73 migrants from Pakistan, Afghanistan and Somalia have been arrested

Huge crowds tried to cross into Greece via the Kastanies Forest in the early hours of Sunday, the source said. Greek authorities said 73 migrants had been arrested, but added that they "weren't from Idlib, but from Afghanistan, Pakistan, Somalia".

Some 13,000 migrants have gathered along the Turkish-Greek border, including families with young children, the International Organisation for Migration said on Saturday.

Greek security forces are patrolling the Evros river...