A migrant woman with a child pushing with riot police outside a refugee camp in the village of Diavata, west of Thessaloniki, northern Greece, Friday, April 5, 2019. Clashes broke out Thursday between migrants and Greek police outside a camp in northern Greece, where hundreds gathered in the hope of reviving a route that saw hundreds of thousands enter more prosperous countries in Europe. (AP Photo/Giannis Papanikos)

DIAVATA, Greece (AP) — Protesting migrants clashed with police in northern Greece for a second day Friday while migrants in Athens also blocked the city's main train station in demonstrations that authorities said had been triggered by false reports on social media that restrictions on travel to northern Europe had been lifted.

The clashes occurred outside an overcrowded migrant camp Friday, where police used tear gas and stun grenades to push back hundreds of protesters carrying their belonging and trying to walk to the border between Greece and North Macedonia about 60 kilometers (40 miles) to the north.

Several hundred migrants, many having spent the night outside the camp in tents or sleeping rough, were involved in the clashes in a cornfield where police set up several blockades with buses and lines of riot police officers.

Hashem Mojadam, a 36-year-old Iraqi asylum-seeker, spent the night in the field outside the refugee camp and said he hoped to join other migrants and walk to the border.

"Everyone is tense and no one really slept," he told The Associated Press. "We're hoping to go to another country because there is nothing for us here ... and we need a safe place."

Migration Minister Dimitris Vitsas issued a plea to migrants to return to camps that are officially known as hospitality centers.

"There was a false report being distributed that the border would be opened. We have informed the hospitality centers that is not the case," Vitsas told state-run ERT television.

"I am issuing a plea right now to these people ... that they should return to the centers. As refugees and as people they have rights but they also an obligation to respect and abide by the laws of the country that is providing them hospitality."

Greece's border with North Macedonia has been fenced off and heavily policed for the past three years after the European Union cracked down on migration because more than a million asylum-seekers traveled to EU countries, most fleeing war-torn areas in Iraq, Syria, and Afghanistan.

In Athens, police said about 300 protesters gathered Friday at Larissis Station near central Athens, with many sitting on the tracks in front of trains.

Authorities didn't immediately intervene to disperse the demonstrators, while officials from the United Nations refugee agency, UNHCR, were trying to persuade them to leave voluntarily.

___

Thanassis Stavrakis reported from Athens. Follow Costas Kantouris at https://twitter.com/CostasKantouris and Stavrakis at https://twitter.com/TStavrak

A migrant shouts during a protest outside a refugee camp in the village of Diavata, west of Thessaloniki, northern Greece, Friday, April 5, 2019. Clashes broke out Thursday between migrants and Greek police outside a camp in northern Greece, where hundreds gathered in the hope of reviving a route that saw hundreds of thousands enter more prosperous countries in Europe. (AP Photo/Giannis Papanikos)
A migrant boy walks on the tracks at Larissis rail way central station in Athens, Friday, April 5, 2019. Protesting migrants in Greece have blocked Athens' main train station and disrupted rail services, apparently prompted by false reports on social media that restrictions on travel to northern Europe had been lifted.  (AP Photo/Thanassis Stavrakis)
A migrant man with his child sit at the side of blocked rail way at Larissis rail way central station in Athens, Friday, April 5, 2019. Yesterday, In the wake of anonymous calls on social media for a long trek through heavily guarded Balkan borders, police said more than 500 people, including families with small children, assembled in a cornfield outside the Diavata migrant camp, which is around 10 kilometers (6 miles) west of the city of Thessaloniki. (AP Photo/Thanassis Stavrakis)
Migrants block the rail way at Larissis rail way central station in Athens, Friday, April 5, 2019. Yesterday, In the wake of anonymous calls on social media for a long trek through heavily guarded Balkan borders, police said more than 500 people, including families with small children, assembled in a cornfield outside the Diavata migrant camp, which is around 10 kilometers (6 miles) west of the city of Thessaloniki. (AP Photo/Thanassis Stavrakis)
A migrant reacts as walks at the rail way that blocked from migrants at the Larissis rail way central station in Athens, Friday, April 5, 2019. Yesterday In the wake of anonymous calls on social media for a long trek through heavily guarded Balkan borders, police said more than 500 people, including families with small children, assembled in a cornfield outside the Diavata migrant camp, which is around 10 kilometers (6 miles) west of the city of Thessaloniki. (AP Photo/Thanassis Stavrakis)
A migrant woman stands at a field outside a refugee camp in the village of Diavata, west of Thessaloniki, northern Greece, Friday, April 5, 2019. Clashes broke out Thursday between migrants and Greek police outside a camp in northern Greece, where hundreds gathered in the hope of reviving a route that saw hundreds of thousands enter more prosperous countries in Europe. (AP Photo/Giannis Papanikos)
A migrant woman pushing with riot police outside a refugee camp in the village of Diavata, west of Thessaloniki, northern Greece, Friday, April 5, 2019. Clashes broke out Thursday between migrants and Greek police outside a camp in northern Greece, where hundreds gathered in the hope of reviving a route that saw hundreds of thousands enter more prosperous countries in Europe. (AP Photo/Giannis Papanikos)
Migrants women pushing with riot police outside a refugee camp in the village of Diavata, west of Thessaloniki, northern Greece, Friday, April 5, 2019. Clashes broke out Thursday between migrants and Greek police outside a camp in northern Greece, where hundreds gathered in the hope of reviving a route that saw hundreds of thousands enter more prosperous countries in Europe. (AP Photo/Giannis Papanikos)