Uruguay striker Luis Suarez has been unfairly victimized in his "barbarous" expulsion from the World Cup for biting, his disconsolate grandmother said on Thursday.

"Everyone knows what they've done to Luis. They wanted him out of the World Cup. Perfect, they did it. They chucked him out of there like a dog," a sobbing Lila Piriz Da Rosa told Reuters from Suarez's birthtown Salto in northwest Uruguay.

Piriz, who has 22 grandchildren, said soccer authorities had been watching Suarez from the outset.