A protester carrying a rainbow flag invades the pitch during the World Cup match between Portugal and Uruguay.
The protester wore a t-shirt with “Save Ukraine” on the front and “Respect for Iranian woman” on the back.
The stewards chased him and he dropped the flag before being taken off the pitch at Lusail Stadium, the venue for the final on 18 December.
The decision to host the World Cup in Qatar, where homosexuality is illegal, has been criticized by LGBTQ+ groups.
Before the tournament, Fifa wrote to the 32 competing teams telling them to “focus on football”.
Qatar’s World Cup ambassador Khalid Salman called homosexuality “mental damage” ahead of the tournament, comments Human Rights Watch said were “prejudicial and unacceptable”.
England, Wales and other European nations decided not to wear the OneLove armband at the World Cup after Fifa threatened the captains with sporting sanctions.
The captains, including England’s Harry Kane and Wales’ Gareth Bale, had planned to wear the armband during games to promote diversity and inclusion.
Meanwhile, Iranian players refused to sing their national anthem ahead of their World Cup match with England in an apparent expression of support for anti-government protests.
The protests in Iran were triggered by the death in custody in September of Mahsa Amini, a 22-year-old woman who was detained by vice squad for allegedly breaking strict headgear rules.
Portugal beat Uruguay 2-0 in Monday’s Group H game.