A migrant catches his breath after inhaling teargas thrown by Macedonian police on a crowd of more than 500 refugees and migrants protesting next to a border fence at a makeshift camp at the Greek-Macedonian border near the village of Idomeni, Greece, April 10, 2016.

Macedonian police used tear gas to push back hundreds of migrants from a border fence on Sunday at a sprawling refugee camp on the Greek side of the frontier, a Reuters witness said.

Tear gas was fired on a crowd of more than 500 people who had gathered at the fence at the makeshift camp of Idomeni. A Greek police source said there was tension in the area but declined to comment further.

A Macedonian official who asked to remain anonymous said that a large group of migrants left Idomeni camp in the morning and stormed towards the fence.

“They threw rocks at the Macedonian police. The police fired tear gas in response,” the official said.

A teargas canister thrown by Macedonian police lands among protesting migrants during clashes next to a border fence at a makeshift camp for refugees and migrants at the Greek-Macedonian border near the village of Idomeni, Greece, April 10, 2016.

Related articles across the web

• Photos: Southern Half of Calais Refugee Camp is Razed
• Greek buses sent to Idomeni camp to pick up refugees
• Heard of "Hot Migrants?"
• Migrants attack Greece-Macedonia border fence
• Greek buses sent to Idomeni camp to pick up refugees
• Return of the Iron Curtain: Soviet-era barbed wire fence is rebuilt in Bulgaria to prevent migrants reaching Europe via new Turkish route as Prime Minister also announces plans for a wall on Greek border
• Germany Gives 150,000 Free Condoms to "Refugees"
• People in refugee camps are starting to see a bot for therapy
• "Muslim Invaders" Loot Donations from a Greek Volunteer Woman's Car in Broad Daylight
• "Muslim Invaders" Loot Donations from a Greek Volunteer Woman's Car in Broad Daylight