A Brazilian man whom authorities said acted as a courier in the TelexFree fraud case and led them to $17.5 million stashed in a box spring has pleaded guilty to federal money laundering charges.

Cleber Rene Rizerio Rocha, 28, pleaded guilty to one count of conspiring to commit money laundering and one count of money laundering, and will be sentenced in December.

Rocha was arrested Jan. 4 by Homeland Security Investigations in a sting operation that prosecutors say linked him to money laundering by TelexFree founder Carlos Wanzeler, who is in hiding in his native Brazil and allegedly had been sending people to the Boston area to pick up slices of some $40 million that he left here.