Serbia's Aleksandar Mitrovic completed a perfect week in World Cup qualifying with two more goals to help the Balkan nation to a 2-1 win.
Referee Danny Makkelie has apologised after denying Cristiano Ronaldo and Portugal the winning goal in Saturday's 2-2 draw against Serbia.
Former Portugal international Fernando Meira has criticised Cristiano Ronaldo's decision to walk off the pitch and throw away his captain's armband.
Cristiano Ronaldo was denied a clear stoppage-time winner for Portugal when Serbia's Stefan Mitrovic cleared the ball after it had crossed the line.
Serbia's Football Association president Slavisa Kokeza was questioned by police on Sunday in connection with arrests of members of a fan group.
A dog who repeatedly invaded the pitch during a friendly soccer match between two Serbian second-tier teams was sent off.
Serbian police raided the stadiums of the country's two biggest football clubs on Thursday after arresting 17 people linked to organized crime.
Scotland reached their first European Championship finals since 1996 after a 5-4 penalty shootout win in Serbia with the match ending 1-1.
Hungary, Iceland, Scotland, Northern Ireland, Serbia, Slovakia, North Macedonia, and Georgia all advanced to the Euro 2020 playoff finals.