The prosecutor, after questioning Salgado at the Central Directorate of Penal Investigation and Action (DCIAP) in the capital, “requested that the judge interrogate the suspect” with a view to deciding whether he should be remanded into custody, the attorney-general’s office said in a statement.
Carlos Alexandre is the TCIC judge overseeing the case, which is known as Operation Marquês, and which concerns various white-collar crimes.
Salgado is himself suspected of practising acts as part of the crimes of bribery, breach of trust, influence peddling, money laundering and serious tax fraud.
According to the attorney-general’s office, the operation currently has “20 suspects, 15 individual and five collective”.
These are known to include José Sócrates, prime minister of Portugal from 2005 to 2011, Armando Vara, a former minister, and Carlos Santos Silva, a businessman and close friend of Sócrates.
The investigation is due to be completed in March, more than two years after it started. The first detentions - including that of Sócrates - were made in November 2014.
Salgado is already a formal suspect in an unconnected case relating to the collapse of BES in 2014, with massive losses relating to the debts of other group companies.