The ex-Porto player is not suspected of any wrongdoing, and police stressed that the investigation will not involve him.
Richard
Alex da Silva Martins 'Gigi' is thought to be a friend or acquaintance
of Anderson and was detained his home in the Menino Deus neighbourhood
of Porto Alegre.
Brazilian police had conducted a year-long
investigation into the affairs of Mr 'Gigi' but insist that Anderson is
totally innocent.
Public Ministry official Ricardo Herbstrich told Zero Hora newspaper: "There is nothing against Anderson in this investigation.
"According to what we have, he is just a friend of the dealer and maybe he doesn't even know he is a criminal."
The
agent who manages Anderson's Brazilian business dealings, Paulo
Tonietto stated: "The only thing I can say is that Anderson, as well as
any other person, can be a friend of whoever he wants, but he is not
involved in any crime.
"Anderson is a professional and he will offer an explanation of what has happened soon."