The Latest on European reactions to the migrant crisis (all times local):

1:15 p.m.

The U.N. human rights chief says the European Union needs to uphold its commitment to resettle tens of thousands of refugees now stuck in Greece and Italy.

Over a million people, mostly Syrians, Iraqis and Afghans, crossed the eastern Mediterranean Sea from Turkey to Greece since January 2015. The flow has recently slowed following an EU-Turkey accord on the migration crisis.

Zeid Ra'ad al-Hussein noted a "worrying increase" in detention of migrants where "even unaccompanied children are frequently placed in prison cells or centers ringed with barbed-wire."

Speaking Monday to the Human Rights Council, Zeid said EU members "need to make good on their commitments" made in September to relocate 160,000 people from Greece and Italy. He cited new figures saying less than 1 percent of those have been relocated.

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12:05 p.m.

Police in northern Greece are clearing makeshift migrant camps along the border with Macedonia after creating more shelter space to house stranded refugees and migrants.

Scores of riot police were deployed Monday as more than 400 Syrians and Iraqis were moved from a camp set up around a gas station near the Greek border with Macedonia and moved by bus to a shelter near the northern city of Thessaloniki.

Authorities said a site previously used to store grain had been modified by the army and was being used as a shelter where the migrants were being taken.

Journalists were not allowed access to the site during the police operation.

Around 3,000 refugees and migrants remain camped at the border at three sites, after authorities cleared a huge makeshift camp at Idomeni last month.