The latest news as hundreds of thousands make their way across Europe in search of safety and a better life. All times local.

9:40 a.m.

Sweden's prime minister is defending his decision to reintroduce border controls, saying it is no longer possible to properly control the country's borders.

Stefan Lofven told reporters on Thursday that "when our authorities tell us we cannot guarantee the security and control of our borders, we need to listen."

Speaking at a migration summit in Malta, Lofven said that his European Union partners understand Sweden's decision, and that EU leaders need to revamp the rules for Europe's passport-free area.

He said the EU needs "to discuss what the rules should look like. We need another system. That is obvious."

Sweden currently has the highest number of migrants per capita of any EU country, as the bloc struggles to manage its biggest refugee emergency in decades.