The Polish prime minister has told David Cameron that governments "cannot stigmatise any national group and must respect European law".
Donald Tusk's office described a phone conversation between the pair this afternoon as "an open and frank exchange of views".
It said Mr Cameron explained he had not intended to stigmatise Polish people who work in the UK when he made comments about child benefits payments to migrants.
But Mr Tusk was said to have told the Prime Minister that Poland could not accept such statements, regardless of their original intentions.
More top news
A 29-year-old Frenchman - named by police as Smail Ayad - has been arrested on suspicion of murder.
The former Ukip leader told ITV News he thinks Trump can go all the way "if he sticks to his campaign messages".
Trump introduced Farage as "the man behind Brexit" who had won "against the odds".