The medical director of the NHS in England has called for mortality rates and waiting times in Welsh hospitals to be investigated.
Sir Bruce Keogh wrote to Chris Jones, who runs the Welsh NHS, with his concerns.
His e-mail mentions six Welsh hospitals that he describes as having a 'persistently high mortality rate.'
The Welsh Government says the NHS in Wales is "open, transparent and has a higher level of scrutiny than any other part of the UK", adding that comparisons on A&E waiting times and mortality rates cannot be made between England and Wales as both sets of data are calculated differently.
More top news
We look back at some of the stories, people and events that stood out in 2014.
Italian vodka, suspicious sediment and antifreeze sold as spirits are among the potential danger signs for shoppers stocking up on alcohol.
Any showers in the north will clear away quickly to leave a dry and bright day with plenty of sunny spells.