The information was confirmed to Lusa by a PGR source, who added that the session was already suspended and should resume on Thursday.
At stake is the freezing of a bank account of Carlos de São Vicente in Switzerland, with about 900 million dollars for suspected money laundering, according to a Swiss blog that follows judicial matters in that country, citing a Swiss prosecutor's order.
According to Angolan public radio (RNA), the businessman arrived at the National Directorate of Investigation and Penal Action (DNIAP), an agency of the Attorney General's Office, before 10 am and began to be heard 10 minutes later.
Carlos de São Vicente, who was heard for about three hours, is accompanied by two lawyers, according to the same radio.
The Angolan judicial authorities have already ordered the seizure of several buildings of the AAA group, belonging to businessman Carlos de São Vicente, which is being investigated in Switzerland for embezzlement and money laundering.
According to a statement issued last week by the National Asset Recovery Service of the Attorney General's Office, the AAA buildings, the IU and IKA hotels, located throughout the country, and the IRCA building, located on Rua Amílcar Cabral in Luanda, have been seized.
The PGR justified the seizure with evidence of embezzlement, economic participation in business, influence peddling and money laundering, crimes for which it was charged.
After the buildings, the National Asset Recovery Service of the PGR announced the seizure of the 49 percent minority stake of AAA Activos in Standard Bank Angola, where the businessman is a non-executive director, having requested suspension of functions for the duration of the process.
Last Friday, Eduarda Rodrigues Neto, director of the National Asset Recovery Service of the PGR, discussed with the Swiss judicial authorities, among other issues related to Angola's fight against corruption, the process involving Carlos de São Vicente.
On that occasion, Eduarda Rodrigues will have delivered a letter rogatory to the Swiss judicial authorities.
The PGR technicians also wanted to be informed of other cases involving Angolan public figures in the process of recovering illegally obtained assets.
The AAA, led by Carlos de São Vicente, married to one of the daughters of the first President of Angola, António Agostinho Neto, is one of the largest Angolan business groups, operating in the area of insurance and hospitality.
