The Latest: 4 E. European heads urge Britain to stay in EU

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The Latest on the British referendum on whether to stay in the European Union (all times local):

4 p.m.

The prime ministers of four Central European countries say they have a "common, strong and sincere" interest in the United Kingdom staying inside the European Union after the forthcoming referendum.

In a statement released during their meeting in Prague on Wednesday, Bohuslav Sobotka of the Czech Republic, Beata Szydlo of Poland, Viktor Orban of Hungary and Robert Fico of Slovakia said they fully recognize the right of British citizens to decide on the future of their country.

But the four, whose countries form an informal grouping known as the Visegrad Group, also said that the tough challenges the EU is facing would be easier to overcome together with Britain as a member state.

The British people will vote on their future in the EU in a referendum on June 23.


9 a.m.

U.K. lawmakers are demanding that Britons get more time to register to vote in the referendum on European Union membership after a technical glitch prevented last-minute registration.

A last-minute rush following a television debate on whether Britain should leave the EU prompted the website to crash in the hours before the midnight deadline.

Among those calling for an extension Wednesday was Liberal Democrat leader Tim Farron. He says it could be a "major blow" to the cause of staying in the European Union if young people were denied a say.

More than half a million people registered Tuesday to vote in the June 23 referendum.

The rush came in the hours after a debate on the matter between Prime Minister David Cameron and UK Independence Party leader Nigel Farage.