Ministry spokeswoman Barbara Lobato said the "government made the decision to guarantee the safety of fans inside and outside the stadium."
She said the ministry did not know the reasons behind the partial absence of guards under contact to FIFA.
Officials found there had been an insufficient number of private guards at the stadium for Saturday's Uruguay-Costa Rica match.
The World Cup Organizing Committee said FIFA and the Brazilian government agreed to increase security due to the "dimension" of Tuesday's game between Brazil and Mexico. State police troops, federal police agents and members of the elite National Force were deployed at the stadium. Lobato would not say how many troops were used.
