Incidents involving Football Association of Wales staff and Wales supporters having rainbow-coloured bucket hats confiscated before the Group B opener against the USA are being urgently investigated by authorities.

Fifa and the Qataris were in talks on the matter on Tuesday, where Fifa reminded their hosts of their assurances before the tournament that everyone was welcome and rainbow flags would be allowed.

The Guardian also understands Fifa is deeply concerned about several incidents around the match, including Welsh FA staff and fans being confronted by security for bringing the hats into the Ahmad bin Ali Stadium and a US fan with a rainbow flag being confronted on the metro. The Qatari Supreme Committee is expected to issue a statement in the next 24 hours...