Migrants with a stick, stones and knife fight with each other after a brawl erupted over a place in an overcrowded train heading to the Serbian border at the train station in Gevgelija, The Former Yugoslav Republic of Macedonia, 14 August 2015. The number of migrants passing through Macedonia increases day by day, local sources said. From the beginning of the year to mid-June 2015, nearly 160,000 migrants landed in the southern European countries, mainly Greece and Italy, on their way to wealthier countries in Western and Northern Europe, according to estimates by the International Organization for Migration (IOM). (Photo by Georgi Licovski/EPA)

A migrant boy reacts after he was shocked by electricity, while trying to climb a utility pole, at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. In the past month, an estimated 30,000 refugees have passed through Macedonia, another step in their uncertain search for a better life in western Europe. (Photo by Stoyan Nenov/Reuters)

A migrant woman rests with her child as they wait for a train to arrive at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

Migrants wait at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

Migrants rest at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

A migrant man prays next to a child at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

Migrants wait for a train at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

A migrant pushes baby stroller as he arrives at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

A migrant rests as he waits for a train to arrive at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

Migrants try to board a train at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Fatos Bytyci/Reuters)

A migrant arrives at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

A migrant plays with his child as they wait for a train to arrive at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

A migrant family shares a moment as they wait for a train to arrive at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

Migrants rest as they wait for a train to arrive at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

Migrant children cry as they wait with their family for a train to arrive, at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

Migrants wait for a train to arrive, at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

Mobile phones of migrants are left for charging at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

A migrant boy is carried by fellow migrants after he was electrocuted while trying to climb a utility pole, at Gevgelija train station in Macedonia, close to the border with Greece, August 14, 2015. (Photo by Stoyan Nenov/Reuters)

A migrant sleeps on a train as it travels through Macedonia July 31, 2015. (Photo by Ognen Teofilovski/Reuters)

A migrant rests on an overcrowded train as they travel north through Macedonia August 2, 2015. (Photo by Ognen Teofilovski/Reuters)

A woman washes a girl's face at Gevgelija train station in Macedonia near the border with Greece July 31, 2015. (Photo by Ognen Teofilovski/Reuters)

Migrants wait for the train at Gevgelia train station near Macedonia's southern border with Greece July 31, 2015. (Photo by Ognen Teofilovski/Reuters)

Migrants clamber onto a train at Gevgelija train station in Macedonia, close to the border with Greece July 30, 2015. (Photo by Ognen Teofilovski/Reuters)

Migrants sit on a train at Gevgelija train station in Macedonia, close to the border with Greece July 30, 2015. (Photo by Ognen Teofilovski/Reuters)

Migrants arrive from Greece at the train station in Gevgelija near the Greek border with Macedonia July 30, 2015. (Photo by Ognen Teofilovski/Reuters)

Migrants sleep on the ground at Gevgelija train station near the Greek border with Macedonia July 30, 2015. (Photo by Ognen Teofilovski/Reuters)

Syrian migrants travel on a train near Skopje in Macedonia August 2, 2015. (Photo by Ognen Teofilovski/Reuters)

A woman looks out of the window as she travels on a train through Macedonia July 31, 2015. (Photo by Ognen Teofilovski/Reuters)

A migrant boy looks out of the train window as he travels through Macedonia August 2, 2015. (Photo by Ognen Teofilovski/Reuters)

Migrants rest on a train as it travels through Macedonia August 2, 2015. (Photo by Ognen Teofilovski/Reuters)

Syrian migrants rest on a train as it travels through Macedonia August 2, 2015. (Photo by Ognen Teofilovski/Reuters)