Lazio fans have been pictured making fascist salutes before and during their side's Europa League defeat by Celtic.
A large police presence escorted supporters of the Italian club from Glasgow city centre to Celtic Park for the tie, with the hosts winning 2-1.
Further officers were deployed outside the stadium before and after the game, and several banners were displayed by both sets of fans inside the ground.
Police Scotland confirmed five people were arrested on the night.
Five were also ejected from the stadium while three were reported to the Procurator Fiscal.