French cybercrime authorities have escalated an investigation of Elon Musk and his social network X to a criminal probe, the Paris prosecutor's office said Thursday. Musk and former X CEO Linda Yaccarino were issued summons by French authorities for April 20. Both of them declined to appear and answer questions, according to the prosecutor's office. In February, Musk called the probe a " political attack ," after French authorities raided the Paris office of X. The probe, requested by French