He had been living under the radar for months at a residence 200 metres from the Promenade des Anglais, where a property manager says he repeatedly invoked his brother's name to intimidate her.
The 17 year old was found gravely wounded on Sunday afternoon in the Nice-Est district, in the second knife attack in the area within a week.
The mayor has written to FIFA president Gianni Infantino and the French football federation, asking for a tribute before Tuesday's World Cup semi final, which falls on the same day as the attack's tenth anniversary.
Mr Worldwide played Nice on Sunday night, with Lil Jon joining as special guest.
This year's three night run at the Jardin Albert 1er mixes jazz, soul, funk and hip hop across two stages.
The race arrives on the Riviera on August 8 and 9, with the final stage looping the city four times before the finish on the Promenade des Anglais.
This year's march sets off from the port under the slogan "the future will be queer," with road closures in place across the city centre.
Results are out for more than 21,000 students in the Nice and Var academies, after correction teams worked through nearly 109,000 examination papers.
The Nice city official who claimed she was pressured to alter a security report following the 2016 Promenade attack has been acquitted, as the tenth anniversary of the tragedy approaches.
Two Nice streamers go on trial for the sustained live humiliation of a vulnerable man who later died on camera, in a case that exposes the darkest corners of online entertainment.
Two people are killed and six injured in a shooting in Nice's Moulins district, prompting the mayor to demand 250 extra officers and condemn what he called a declaration of war on the Republic.
Two young men with far-right links have been jailed after a string of violent attacks in Nice, with sentences of 18 months handed down by a Nice court.