Paris stab suspect flagged as radical A security camera records Alexandre D, the man suspected of stabbing a French soldier in Paris. A 21-year-old man arrested on suspicion of stabbing a French soldier in the neck in Paris prompted a warning to French intelligence months ago over fears he had been radicalised, it has been claimed. Alexandre D, as the suspect has been called, was arrested at a friend's flat in Yvelines, west of Paris. Investigators are seeking to determine whether the attack might have been inspired by the Islamist murder of a British serviceman in London. Contrary to earlier claims, police sources told Le Monde newspaper that French intelligence was recently warned that the suspect, who converted to Islam about three years ago, was "becoming increasingly radical." A police officer works at the site where a man attacked a soldier patrolling a subway station in Paris. Photo: AFP/Francois Guillot The warning came in a note from the police intelligence unit of the Yvelines area, where Alexandre D was arrested. Detailing the suspect's evolution towards a radical form of Islam since 2009, police had noted "suspicious behaviour." Homeless and unemployed, Alexandre D applied for jobs in Rambouillet where he "demanded not to work with women." He also came under scrutiny after a street prayer in 2007, while his DNA profile was on record after a series of petty crimes as a minor. Detectives identified him through video footage, in which he can be seen praying near the crime scene eight minutes before the attack, as well as buying two knives an hour earlier. DNA was found on items left at the scene, including a knife and a fruit juice bottle. The Paris prosecutor, Francois Molins, said the suspect "owned up to the attack" soon after his arrest and added that he "acted in the name of his religious ideology."