Romanian border police say they are questioning 27 migrants from Syria and Iraq who are suspected of illegally entering Romania and were planning to head to Western Europe.
A police statement says that they found five men, five women and 17 minors during patrols close to Romania's border with Serbia.
Police found two groups on separate occasions Monday in two villages near the border with Serbia. Police say the migrants "could not justify their presence in the area."
The statement said the adults were aged 28 to 53, and the youngest was a 1-year-old baby.
They are being investigated on suspicion of illegally crossing into Romania from Serbia, and will be sent back there.
The European Union's landmark migrant plan to share 160,000 refugees in Italy and Greece among their EU partners is likely to result in less than 40,000 people finding new homes by the September deadline.
EU Migration Commissioner Dimitris Avramopoulos said Tuesday that more than 18,000 migrants have been relocated and that 12,500 people in Greece and some 4,000 in Italy are eligible to go.
He said those 16,500 people can be relocated by September, but he noted that some countries haven't relocated a single person, "in breach of their obligations."
Avramopoulos told EU lawmakers that the plan, launched in September 2015, "is vital for the success of our (migrant) policy."
Hungary and Poland voted against the plan, but were on the losing side and refuse to take part.