Fujimori, who conceded last month after a failed presidential election, is accused of taking illicit money from Brazilian company Odebrecht.
Corruption proceedings against Peruvian opponent Keiko Fujimori began with a preliminary hearing on Tuesday, just weeks after she had conceded defeat in his third unsuccessful presidential race.
Fujimori’s election victory would have meant no prosecution during his presidential term over charges stemming from a sprawling corruption case involving Brazilian construction giant Odebrecht.
She is accused of having taken illicit money Odebrecht to fund the failed presidential candidacies in 2011 and 2016.
The 46-year-old daughter of jailed ex-president Alberto Fujimori denies the allegations.
But prosecutors said they would seek a 30-year and 10-month prison sentence for Fujimori for money laundering, organized crime, obstruction of justice and misrepresentation.
She has already served pre-trial detention twice, spending 16 months behind bars in total until her release last year due to the coronavirus outbreak.
The hearing which opened on Tuesday before Judge Victor Zuniga is the first step in what would be the first trial of a Peruvian politician in the Odebrecht scandal.
It is intended to review the indictment against Fujimori and 39 co-defendants, after which the judge can approve all or part of the indictment drawn up by prosecutor José Domingo Perez.
The defendants include Fujimori’s husband, American Mark Vito Villanella, and other members or leaders of his Popular Force Party – long dominant in Peruvian politics, but now second in parliament after Castillo’s Free Peru movement. .
Fujimori was not in court on Tuesday, represented instead by his lawyer Giuliana Loza.
Under the conditions of his release from pre-trial detention, Fujimori is not allowed to leave Lima without special permission, nor to have contact with witnesses in the case.
The pre-trial hearing can take days, weeks, or even months.
Four former presidents have been implicated in the Odebrecht affair, including two-term leader Alan Garcia, who committed suicide in 2019 when police came to his home to arrest him.
Alberto Fujimori is in prison on charges unrelated to corruption and crimes against humanity.