By Dan Collyns BBC News, Lima

Mr Fujimori is facing a closed-door trial

Former Peruvian President Alberto Fujimori has been questioned by a judge for the first time since extradition from Chile last month.

Mr Fujimori, who governed Peru from 1990 to 2000, was extradited on charges of corruption and sanctioning death squad killings.

The first session of the closed-door trial covered one of the five corruption charges he faces.

Authorities say they could pass sentence in less than a month.

Vladi Videos

Nothing has been seen or heard about Alberto Fujimori since he arrived in Lima several weeks ago.

The former Peruvian leader has been hidden away in the headquarters of the police special operations centre on the outskirts of the capital.

Now a judge has questioned him about the allegation he ordered a raid on the apartment of the ex-wife of his intelligence chief, Vladimiro Montesinos, in 2000.

In this raid, it is alleged dozens of boxes of videos suspected of containing incriminating evidence of corrupt practices were removed.

The so-called Vladi Videos were secretly taped by Mr Montesinos and show him bribing broadcasters and opposition politicians.

Mr Montesinos, who has been in prison for the past six years, said he was just doing his master's bidding. Mr Fujimori said Mr Montesinos was acting alone.

Speaking after the private hearing, Mr Fujimori's lawyer said no videos were taken from the flat and that the-then president was trying to arrest Mr Montesinos, who had already fled the country as the corruption scandal broke.

If convicted in this case, Mr Fujimori could face seven years in jail.

But he faces a far longer stretch if he is found guilty of more serious charges that he authorised the death squad murders of 25 people in the early 1990s.