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."