Europe

Migrant protests intensify at the Greek border

  • A girl walks by a grafitti at the train station near the makeshift refugee camp at the northern Greek border point of Idomeni, Greece, Tuesday, March 29, 2016. More than 15,000 people - nearly a third of the total stranded in Greece - are refusing to move to government-built shelters around the country, and remain at the border with Macedonia and at the port of Piraeus, near Athens. (AP Photo/Darko Vojinovic)

    A girl walks by a grafitti at the train station near the makeshift refugee camp at the northern Greek border point of Idomeni, Greece, Tuesday, March 29, 2016. More than 15,000 people - nearly a third of the total stranded in Greece - are refusing to move to government-built shelters around the country, and remain at the border with Macedonia and at the port of Piraeus, near Athens. (AP Photo/Darko Vojinovic)  (The Associated Press)

  • Greek police officers leave after a protest demanding the opening of the border between Greece and Macedonia in the northern Greek border station of Idomeni, Greece, Tuesday, March 29, 2016. More than 15,000 people - nearly a third of the total stranded in Greece - are refusing to move to government-built shelters around the country, and remain at the border with Macedonia and at the port of Piraeus, near Athens. (AP Photo/Darko Vojinovic)

    Greek police officers leave after a protest demanding the opening of the border between Greece and Macedonia in the northern Greek border station of Idomeni, Greece, Tuesday, March 29, 2016. More than 15,000 people - nearly a third of the total stranded in Greece - are refusing to move to government-built shelters around the country, and remain at the border with Macedonia and at the port of Piraeus, near Athens. (AP Photo/Darko Vojinovic)  (The Associated Press)

  • Migrants stand in front of Greek police officers during a protest demanding the opening of the border between Greece and Macedonia in the northern Greek border station of Idomeni, Greece, Tuesday, March 29, 2016. More than 15,000 people - nearly a third of the total stranded in Greece - are refusing to move to government-built shelters around the country, and remain at the border with Macedonia and at the port of Piraeus, near Athens. (AP Photo/Darko Vojinovic)

    Migrants stand in front of Greek police officers during a protest demanding the opening of the border between Greece and Macedonia in the northern Greek border station of Idomeni, Greece, Tuesday, March 29, 2016. More than 15,000 people - nearly a third of the total stranded in Greece - are refusing to move to government-built shelters around the country, and remain at the border with Macedonia and at the port of Piraeus, near Athens. (AP Photo/Darko Vojinovic)  (The Associated Press)

Police have clashed with some 300 migrants and refugees at the Greek border with Macedonia, as protests intensified and thousands ignored government instructions to move to organized shelters.

Youths threw rocks at riot police who withdrew from the area without making any arrests, authorities said Tuesday.

The protesters have blocked freight rail tracks for the past eight days, demanding that the border reopen. Macedonia says the border will remain closed to all migrants at least until the end of the year.

Some 12,000 people remain camped out in harsh conditions near the border village of Idomeni, despite daily calls by the government to move to nearby shelters built by the army.