Earlier this week the Maori Party confirmed that Maori King Tuheitia approached his Tongan counterpart to ask Tongans to provide a candidate.
It said Mr Lua, who is standing in the Maungakiekie electorate, had been blessed by the Royal Houses.
The statement raised concerns from the Tongan Advisory Council chair Melino Makawho said seeking royal endorsements was dangerous.
However, Tongan Consul Stafford 'Aho says that no such endorsement occurred.