Morning top 5: Charlie Flanagan to discuss Brexit in London; 93% of bathing waters meet minimum standards

The top stories this Tuesday morning...

The possibility of a Brexit will top talks between the acting Foreign Affairs Minister and his UK counterpart today.

Charlie Flanagan's in London for a series of engagements, including a meeting with Britain's Foreign Secretary Philip Hammond.

The two foreign secretaries will also speak about several other issues facing Ireland, the UK and Europe, including the refugee crisis and terrorism.

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Prosecutors in Panama have launched a criminal investigation into allegations of tax evasion and money laundering contained in the so-called Panama Papers.

The state prosecutor's office said the revelations published by global media organisations will be investigated, including claims prominent politicians, celebrities and sportspeople exploited secretive offshore tax regimes.

"The facts described in national and international communication media publications under the term 'Panama Papers' will be the subject of criminal investigation," the office said in a statement.

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A number of beaches have been found to have poor quality water for swimming, according to the latest report from the Environmental Protection Agency.

Those failing to meet minimum EU standards include Youghal in Cork, Duncannon in Wexford, Ballyloughane in Galway, Loughshinny, Rush South and Merrion Strand - all in Dublin.

93% of Irish beaches were found to be up to standard.

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The Moore St case is due before the courts again this morning.

The High Court ruled last month that the wider Moore St area should be designated a national monument.

The case was brought by Colm Moore on behalf of the 1916 Relatives Association, after the Heritage Minister ordered that only numbers 14-17 be protected.

The Department of Arts, Heritage and the Gaeltacht will have its first opportunity to respond to the judgment today.

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Over 12,000 Tesco workers will begin balloting on industrial action today.

Unions say the company has refused to implement a Labour Court recommendation for a 2% pay increase.

It is expected that the workers will vote in favour of walking off the job. However, the result will not be known for several weeks given the numbers of staff involved.