Updated

The Latest on the flow of migrants into Europe (all times local):

1:10 p.m.

Border police in southwestern Romania are investigating 15 migrants on suspicion they illegally entered the country from Serbia.

Police on the night patrol spotted a group of 11 people early Friday, walking across a field 300 meters (yards) away from the Serbian border.

A statement said none of the group of eight men, a woman, a 2-year-old and a baby had identity documents. Police said eight were Syrians, and there was one Iraqi, a Sudanese man and a Palestinian. They said they had entered Romania from Serbia and were trying to reach Western Europe. The adults were aged 20 to 30.

Also Friday, border police found a family of four Iraqis near the border with Serbia. They were taken for questioning.

The 15 are being investigated on suspicion of illegal entry to Romania.

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10:50 a.m.

Serbian police say they have arrested two migrants after they fled from detention at Belgrade airport.

Police said Friday that the two Tunisians face charges of illegal border crossing and people-smuggling. They say the men escaped Thursday from temporary detention facilities at the airport.

Police gave no more details, but local media have reported migrants arrived on a plane from Tunisia and were not allowed into Serbia. Reports say they broke through the detention room wall.

Serbia has been a transit country for people from the Middle East, Africa or Asia seeking to reach the European Union. Most of the migrants use land routes to enter Serbia from Bulgaria and Macedonia.

The Balkan country has stepped up border checkups to curb the influx after thousands got stuck here.