The WRL have conacted the player, and received assurances that Frizzell remains committed to the Celtic cause.
“We met with Tyson earlier this year when he was in the UK for the World Club Series, and he gave a clear commitment to Wales,” said Bob Wilson, manager of the WRL.
“On seeing the announcement by Tonga we have been in contact with Tyson to check if this was correct. We are delighted to say that the player remains a Welsh International.
Frizzell is unavailable for this year’s European Championship, but the WRL have been aware of this for some time.