The Football Association of Wales (FAW) have opened a book of condolence following the death of national manager Gary Speed.
Speed died at his home on the outskirts of Chester on Sunday, with sources confirming he was found hanged.
FAW chief executive Jonathan Ford said: "We have had hundreds of messages, my phone hasn't stopped with messages from everyone involved or not involved. It has touched everybody.
"We have had messages from family, friends have called, professional people have called, and they have all been heartfelt messages from people who may only have met Gary a couple of times, which showed the mark of the man.
"He was such a great person and he is such a loss.
"We have a book of condolence available at FAW headquarters and there is an area set aside for fans to leave flowers. Our door is open and we are trying to do everything we can at this terrible, terrible time.
"We have received letters from UEFA and FIFA and our letter from Sepp Blatter this morning said that the Welsh flag is flying at half mast at FIFA House."