WATCH: Migrants Riot, Hurl Stones At Police And Tear Down Greek Border Fence

(Reuters) – Dozens of migrants stranded on Greece’s northern border with Macedonia hurled stones at police, a Reuters witness said, after one man living in the sprawling tent city near the town of Idomeni was injured by a police van.

Police fired teargas to break up the crowd.

Some migrants said the man had fainted as he left his tent and was then hit by the van. A small pool of blood could be seen on the ground. The man was taken to a local hospital and was not seriously hurt, Greek media said.

It was not immediately clear what caused the accident.

Greek police officers stand guard after migrants and refugees threw stones at a police van that was involved in an accident that seriously injured a refugee at a makeshift camp on the Greek-Macedonian border near the village of Idomeni on April 18, 2016. Over one million people crossed clandestinely from Turkey to Greece in 2015 and some 150,000 have made the trip since the start of this year. / AFP / DANIEL MIHAILESCU (Photo credit should read DANIEL MIHAILESCU/AFP/Getty Images)

Greek police officers stand guard after migrants and refugees threw stones at a police van that was involved in an accident that seriously injured a refugee at a makeshift camp on the Greek-Macedonian border near the village of Idomeni on April 18, 2016. (DANIEL MIHAILESCU/AFP/Getty Images)

Migrants tried to tear down the razor wire fence between the two countries last week but were blocked by Macedonian forces and dozens were wounded when Macedonian police fired teargas and rubber bullets at them.

A million migrants, many fleeing Syria, Iraq, Afghanistan and other countries in conflict in the Middle East, Asia and Africa have poured into Europe through Greece since last year.

Those camped at Idomeni are among some 53,000 migrants and refugees stranded in Greece following border closures across the Balkans, the preferred route to western Europe.

Refugees and migrants try to break down the border fence between Greece and Macedonia at the makeshift camp near the village of Idomeni, on April 16, 2016. According to statistics released on on April 8 by the International Organization of Migrants (IOM), more than 152,000 people have arrived in Greece by sea from Turkey since January 1, nearly three-quarters of whom were Syrians. Greek Prime Minister Alexis Tsipras accused neighbouring Macedonia on April 11, 2016 of "shaming" Europe by firing tear gas and rubber bullets at migrants desperately trying to break through a border fence. Tensions are still running high after April 10's violence, which saw 250 refugees and migrants hurt at the flashpoint Idomeni crossing as they tried to force their way into Macedonia. / AFP / DANIEL MIHAILESCU (Photo credit should read DANIEL MIHAILESCU/AFP/Getty Images)

Refugees and migrants try to break down the border fence between Greece and Macedonia at the makeshift camp near the village of Idomeni, on April 16, 2016. (DANIEL MIHAILESCU/AFP/Getty Images)

Earlier on Monday, Greek police tried to persuade dozens to leave as they protested on the railway tracks that pass through the camp into Macedonia. Most refused.

The tracks have been blocked by the migrants for about a month, forcing trains to re-route through Bulgaria. Wagons loaded with goods have been stranded on the tracks for weeks.

“The police come every day and ask us to open the railway but this is our final hope,” said a Syrian man who gave his name as Abdul. “If we let them open the rail lines we will be forgotten here.”

(Reporting by Stoyan Nenov and Fedja Grulovic; Writing by Karolina Tagaris; Editing by Tony Jimenez)

Refugees and migrants try to break down the border fence between Greece and Macedonia near the makeshift camp at the Greek-Macedonian border near the village of Idomeni, on April 16, 2016. According to statistics released on on April 8 by the International Organization of Migrants (IOM), more than 152,000 people have arrived in Greece by sea from Turkey since January 1, nearly three-quarters of whom were Syrians. Greek Prime Minister Alexis Tsipras accused neighbouring Macedonia on April 11, 2016 of "shaming" Europe by firing tear gas and rubber bullets at migrants desperately trying to break through a border fence. Tensions are still running high after April 10's violence, which saw 250 refugees and migrants hurt at the flashpoint Idomeni crossing as they tried to force their way into Macedonia. / AFP / DANIEL MIHAILESCU (Photo credit should read DANIEL MIHAILESCU/AFP/Getty Images)

Refugees and migrants try to break down the border fence between Greece and Macedonia near the makeshift camp at the Greek-Macedonian border near the village of Idomeni, on April 16, 2016. (DANIEL MIHAILESCU/AFP/Getty Images)

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