French investigators remain determined to find the imperial jewels stolen from the Louvre in October, a prosecutor has told AFP.Police believe they have arrested all four thieves who carried out the brazen October 19 robbery, making off with jewelry worth an estimated $102 million from the world-famous museum.For all the latest headlines, follow our Google News channel online or via the app.“The interrogations have not produced any new investigative elements,” top Paris prosecutor Laure Beccuau said this week, almost three months after the broad-daylight heist.But the case remains a top priority, she underlined.“Our main objective is still to recover the jewelry,” she said.That Sunday morning in October, thieves parked a mover’s truck with an extendable ladder below the Louvre’s Apollo Gallery housing the French crown jewels.Two of the thieves hoisted themselves up the ladder in a furniture lift, broke a window and used angle grinders to cut glass display booths containing the