The tickets are being bought for up to 1000 ($1956) for a game, up to 10 times their face value. Disabled spots are thought to be particularly valuable because they come with a free extra ticket so wheelchair users can be accompanied.
Brazilian police are examining 22 images captured on closed-circuit TV and 30 more being circulated on social media after being captured by fans on their mobile phones.
Family of 14, each with 12 fingers
Meanwhile, a special Brazilian family is being closely followed by local media as the national team chases its sixth world football title.
The Silva family are comfortable with all the attention. Photo / AP
The 14 members of the Silva family living in Aguas Claras, on the outskirts of the capital of Brasili, are crossing all six fingers on each hand for luck for Brazil's success in the World Cup. They were born with an extra digit on each hand as a result of a genetic condition. The dominant gene that causes polydactyly can also cause people to grow extra toes.
The family members are comfortable with the attention they receive from the media - which are filming them during the tournament.