British politician, Sayeeda Warsi accuses those campaigning for Britain to leave the European Union of spreading lies, hate and xenophobia, saying she is switching to the "Remain" camp.
Eighty-four migrants are still missing after an inflatable craft sank off the coast of Libya, according to survivors cited by the International Organization for Migration (IOM).
The UN refugee agency says it feared around 500 migrants from Africa had drowned in the Mediterranean after witnesses said their overcrowded boat sank.
EU and Turkish leaders seek to turn into a lasting accord a plan on easing Europe's migrant crisis hailed as a game-changer by Ankara and Brussels but swiftly criticised by the UN's refugee chief.
More than 10,000 migrant children may have disappeared after arriving in Europe over the past two years, the EU's police intelligence unit says.
Hungary has closed its border with Croatia in an effort to stem the flow of migrants through the country en route to western Europe.
EU ministers approve plans to relocate 120,000 migrants, with Hungary and Czech Republic among four countries voting against.
The flow of migrants through the Balkans picks up again with thousands entering Croatia, and the number doubling in a day for Germany.