A migrant girl tries to warm herself as she disembarks a boat at Lesbos Island, Greece, Monday, Jan. 25, 2016. More than 850,000 people, most fleeing conflict in Syria and Afghanistan, entered Greece by sea in 2015, according to the UNHCR, and already in 2016, some 35,455 people have arrived despite plunging winter temperatures. (AP Photo/Mstyslav Chernov)
The Associated Press
BRATISLAVA, Slovakia (AP) - The Latest on Europe's immigration crisis (all times local):
2:55 p.m.
Turkey's state-run news agency says Turkish coast guards have recovered the bodies of four migrants - three of them children - after a smuggler's boat carrying migrants from Syria sank on the way to Greece.
Anadolu Agency said the bodies were found Tuesday near the tiny Greek island of Farmakonissi, which is near the Turkish Aegean resort of Didim. The coast guard was searching the Aegean Sea for more possible victims.
The Turkish Coast Guard says 57 migrants have died in Turkish waters so far this year while attempting to make the perilous journey to the Greek islands.
In all, more than 700 people have died or gone missing in the Aegean Sea since the start of 2015.
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2:25 p.m.
The Czech and Slovak prime ministers say the European Union needs a 'Plan B' in case Greece can't manage the influx of migrants through its territory.
Bohuslav Sobotka and Robert Fico say to protect the European visa-free Schengen travel zone in that case, the 28-nation bloc should take necessary measures on Greece's borders with Macedonia and Bulgaria.
More than 850,000 people, most fleeing conflict in Syria and Afghanistan, entered Greece by sea in 2015. Some European countries, including Slovakia, have blasted Greece for being unable to secure its border, which forms part of the Schengen area.
After the two leaders met Tuesday, Fico said: "Macedonia and Bulgaria could play a key role in protecting the Schengen border."
The two countries already agreed to deploy police forces in Macedonia.
Refugees arrive by train at the transit center for refugees near northern Macedonian village of Tabanovce, before continuing their journey to Serbia, Tuesday, Jan. 26, 2016. European Union nations took a step Monday toward isolating Greece amid acrimony over Athens' failure to stem the flow of migrants at its Mediterranean island borders. The member states "gave a clear signal" that if they can't stop the migrants reaching Greece, they would consider helping Greece's neighbor Macedonia to better seal its border to slow the movement of migrants into other European countries. (AP Photo/Boris Grdanoski)
The Associated Press
A Man unloads a truck filled with various life Jackets at the garbage area in the mountains of Lesbos Island, Greece, Monday, Jan. 25, 2016. The buoyancy aides are discarded by migrants and collected from along the shore-line of the Greek island. More than 850,000 people, most fleeing conflict in Syria and Afghanistan, entered Greece by sea in 2015, according to the UNHCR, and already in 2016, some 35,455 people have arrived despite plunging winter temperatures.(AP Photo/Mstyslav Chernov)
The Associated Press
Refugees disembark from a train on the arrival at the transit center for refugees near northern Macedonian village of Tabanovce, before continuing their journey to Serbia, Tuesday, Jan. 26, 2016. European Union nations took a step Monday toward isolating Greece amid acrimony over Athens' failure to stem the flow of migrants at its Mediterranean island borders. The member states "gave a clear signal" that if they can't stop the migrants reaching Greece, they would consider helping Greece's neighbor Macedonia to better seal its border to slow the movement of migrants into other European countries. (AP Photo/Boris Grdanoski)
The Associated Press
Refugees arrive by train at the transit center for refugees near northern Macedonian village of Tabanovce, before continuing their journey to Serbia, Tuesday, Jan. 26, 2016. European Union member states "gave a clear signal" that if they can't stop the migrants reaching Greece, they would consider helping Greece's neighbor Macedonia to better seal its border to slow the movement of migrants into other European countries, said Dutch State Secretary Klaas Dijkhoff. (AP Photo/Boris Grdanoski)
The Associated Press
Volunteer, right, assists migrants and their children, as they disembark a boat at Lesbos Island, Greece, Monday, Jan. 25, 2016. More than 850,000 people, most fleeing conflict in Syria and Afghanistan, entered Greece by sea in 2015, according to the UNHCR, and already in 2016, some 35,455 people have arrived despite plunging winter temperatures. (AP Photo/Mstyslav Chernov)
The Associated Press