A few minutes before Bruno Fernandes opened the scoring for Portugal, a pitch invader carrying a rainbow flag brought the game to a temporary halt at the Lusail Iconic Stadium in Qatar.
The fan was wearing a Superman shirt with the words "Save Ukraine" on the front of the shirt and "Respect for Iranian Woman" on the back.
The incident happened in the 51st minute of the game. The FIFA global television feed avoided showing the pitch invader, but the individual could be seen running on the field trailing the flag as they were pursued by security officials. The match official was later seen picking the flag up off the turf.
CNN has reached out to FIFA and the Qatar tournament organizers for more information on the incident.
The rainbow flag has been a controversial one at the World Cup.
On Saturday, two German soccer fans told CNN that they were asked by security officials to remove the rainbow-colored items they were wearing as they made their way to watch the World Cup match between France and Denmark.
Last week, American journalist Grant Wahl and former Wales captain Laura McAllister both said they were told by security staff to remove clothing with rainbow-colored patterns.
Wahl said he was released 25 minutes after being detained and received apologies from a FIFA representative and a senior member of the security team at the stadium.
When asked to clarify the dress code for fans, FIFA referred CNN to the tournament handbook, which states “expats and tourists are free to wear the clothing of their choice, as long as it is modest and respectful to the culture.”
After some Wales fans were also denied entry into stadiums for wearing rainbow-colored bucket hats, the Welsh Football Association said FIFA told the federation on Thursday that rainbow-colored flags and hats would be permitted at World Cup stadiums in Qatar.