The latest developments as European governments rush to cope with the huge number of people moving across Europe. All times local (CET):

8:15 a.m.

Activists say conditions at a refugee registration center in the southeast German city of Passau became untenable overnight.

A volunteer who has helped migrants arriving in the Bavarian city says more than 2,000 people were crammed into two large halls, with no medics or interpreters on site.

Dagmar Haase told The Associated Press on Friday that she and other volunteers spent the night at the site handing out food to migrants.

A spokesman for Germany's federal police, which run the site, says some 4,000 migrants came across the border from Austria on Thursday.

Thomas Schweikl says that while medics aren't on-site at all times, ambulances can be called when necessary. He wasn't immediately able to comment on the number of refugees at the site overnight.