Welsh Rugby Union chief executive Roger Lewis has lamented the "great besmirch" of Welsh rugby after Mike Phillips joined the list of players attracting unflattering headlines.
Phillips has been indefinitely suspended from squad duties following the publication of a series of damaging photos taken in Cardiff city centre. The incident comes soon after Phillips' fellow Wales internationals Gavin Henson and Andy Powell incurred the wrath of their clubs.
While disappointed by such behaviour, Lewis insists they are only isolated incidents, and he told Sky Sports News: "There are one or two exceptional things that have happened and one or two individuals who have brought a great besmirch to Welsh rugby. They are very much the exceptions - the majority of players do not behave like this."
He added: "They are hard-working, dedicated professionals.
"We are now addressing this in a very serious and severe way.
"The action taken - on discovering what took place and what was published in the press - sends out a message that this sort of behaviour, not only do we not condone it but we condemn it.
"The players will be disappointed by Mike's actions but they will be hardened in their resolve to prove they are a dedicated group of players.
"The impact of this announcement will harden the resolve to do better than we have."
Phillips, who had sealed a move to French Top 14 club Bayonne from the Ospreys earlier in the week, will now be questioned by the WRU who want clarification over the events that took place in the early hours of Tuesday morning.
Henson was suspended for one week in April by Toulon for fighting with two team-mates and one month later Powell was forced out of Wasps in the wake of a fracas with football fans in a London pub.