The Forestry Commission has said a survey of other sites recently planted with ash from known infected nurseries is continuing.
The Welsh government say they are taking the threat very seriously.
Tree diseases do not respect country boundaries and we need to provide a consistent approach to this threat in order to meet the demands of stakeholders and the public and to ensure that our response is co-ordinated and based on the most up to date scientific evidence.
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Often clear skies this evening will allow for frost to develop. Low cloud will then roll in overnight, making the frost more localised.
Northampton Saints' Director of Rugby has denied that Wales international George North was knocked out during their game against Leicester.
Swansea defender Jordi Amat insists manager Bob Bradley has the backing of the players despite yesterday's 5-0 defeat to Tottenham.