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.
More top news
A mild day with showers in the west, drier and brighter in the east
A team of experts are calling for people in Wales to take more responsibility over their health. We have a few tips here.
The Football Association of Wales says match fixing is 'quite possibly' the biggest threat to football in Wales.