French police were today trying to unravel the mystery around a thwarted church attack in which an Algerian jihadist sympathiser was "remote-controlled" by commanders likely in Syria.
Sid Ahmed Ghlam, 24, was being questioned for a fifth day after his custody was extended under special French anti-terror laws which allow police to interrogate a suspect for up to six days if there is a "risk of an imminent attack".
The Algerian IT student was detained on Sunday when police made the fluke discovery of his plans to attack one or two churches in the town of Villejuif, just south of Paris.
He called paramedics saying he had accidentally shot himself in the leg and police later discovered an arsenal of weapons, tactical gear and cellphones in his car and student flat.
They also found detailed plans to attack the churches and linked his DNA to the murder of a young mother in Villejuif who was found shot dead in the passenger seat of her car on Sunday.
Security sources said the killing may have resulted from an attempt to steal the vehicle of 32-year-old Aurelie Chatelain.
A police source told AFP the suspect had an unusual profile and appeared to be "remote-controlled from afar by one or more mysterious men" likely in Syria who ordered him to target churches.
Interrogated from his hospital bed, Ghlam was not being very talkative, said police sources, adding he seemed torn between "wanting to talk (but) as if moved by some force obliging him not to say anything."
"He appeared literally under the heel of" his commanders who told him where and how to get his hands on the kalashnikovs, pistols and bulletproof vests found by police, said the police source.
Investigators have also seized "masses of electronic data" including encrypted messages between him and a 25-year-old woman in his circle who was taken into custody on Wednesday.
She has denied investigators' accusations that Ghlam planned to seek refuge at her house after carrying out the attack.
"Everything was done to avoid being detected," said a source close to the investigation.
The foiled plot comes less than four months after the jihadist killing spree on Charlie Hebdo magazine and other targets around Paris that left 17 people dead.
With Paris still on high alert after the attacks, Interior Minister Bernard Cazeneuve has ordered authorities to step up security around churches.
