Allegations that Gutierrez and other executives were involved in accounting fraud were first made in June.
Several former Americanas directors have testified before the congressional committee in the past few weeks.
LTS said his comments "do not provide any proof of his allegations or refute evidence of his participation in the fraud".
The holding company described what happened at Americanas as "cunning fraud".
($1 = 4.9373 reais)Reporting by Carolina Pulice Editing by Edwina Gibbs and David GoodmanOur Standards: The Thomson Reuters Trust Principles.
Persons:
Miguel Gutierrez, Gutierrez, Americanas, Jorge Paulo Lemann, Carlos Alberto Sicupira, Marcel Telles, LTS, Sergio Rial, Edwina Gibbs, David Goodman
Organizations:
Reuters, Carolina, Thomson
Locations:
Americanas