Very little is known about the nature or extent of Owen Williams' injury, sustained whilst playing for Cardiff Blues against Asia Pacific Dragons in the World Club 10s on Sunday.
The Blues released a statement yesterday, saying: "Owen Williams is to remain in hospital in Singapore after sustaining an injury at the World Club 10s. Cardiff Blues will issue further updates when they are available."
Blues teammate Macauley Cook also tweeted yesterday to say he was at the hospital with Williams, waiting for his family to arrive.
The WRU said 22-year-old Williams has not travelled home with the rest of the Blues squad.
More top news
Former England fly-half Alex King said he is "immensely proud" to be part of Wales' coaching team for the 2017 Six Nations.
The National Assembly has been ranked top in Wales for being most inclusive for gay, lesbian, bisexual and transgender staff.
Another cloudy day today but we could see more in the way of brightness than yesterday.