He arrived with his family, who are followers of traditional
Tidjian Islam, at the age of 7 at the in Nice. In the 1990s, he spent several stints in prison for a bank statement incident, then for his involvement in several robberies, including that of two jewellery shops in
Monaco in 2002 and 2003. He is said to have been radicalised in prison and started working for recruitment and conversion to jihadist Islam in his neighbourhood and via propaganda videos made and circulated on
YouTube. In 2011, he was already trying to travel to
Afghanistan and
Yemen with about ten acolytes, but was arrested at the Nice train station on the day of their departure.
Recruitments Around 2012, he worked at a
halal sandwich shop called "La Nusra". Diaby is considered by French anti-terrorist services to be a major recruiter of French jihadists for Syria and a close friend of
Forsane Alizza, an Islamist group dissolved in 2012 by the government. "Intelligent, eloquent and manipulative", he became known as a preacher and recruiter, even though he benefited from a regime of semi-freedom and spent his nights in the Nice prison. He began directing the 19 HH series of videos, which are very popular on YouTube and other social networks, with the help of
Lyonnais Mourad Farès. At the end of 2012, his remarks turned to Syria. In 2014, the most viewed video produced by Omsen, Destination la Terre Sainte, exceeded 100,000 views. Carefully staged, alternating Arabic and Hollywood music, his videos mix preaching, diverted cinematographic images, often from works of a religious nature, conspiracy theories or messianic works to serve a conspiracy,
anti-Semitic, millenarian, sectarian and violent discourse. In the April 2013 video serving as a preamble, 19HH claims to be
salafist and
takfirist. These films are entitled: "The History of Humanity" — over four hours — "The Truth About Islam" or "The Truth About the Death of Bin Laden." They are held responsible for the first major wave of departures of young French people at a time before the sophisticated audiovisual propaganda of the Islamic State. He went to Syria in 2013 to lead a group made up mainly of young people from Nice affiliated with the al-Nusra Front, the Syrian branch of al-Qaeda. His group numbered up to 150 fighters, including his brother Moussa. From the end of 2013, his group suffered from tensions when it rejected the Islamic State in order to remain loyal to the jihadist group al-Nusra Front out of reverence for al-Qaeda. He went to Senegal to look for members of his family but he confronted his former friend Mourad Farès on his return. == Involvement in conflicts ==