Paris, April 21 -- Billionaire Elon Musk has been summoned for a voluntary interview in Paris on Monday as part of a French probe into his social media platform X, though it remains unclear if he will appear. French authorities issued a summons for Musk in February as part of an investigation, launched in January 2025, into allegations that X's algorithm was used to interfere in French politics. The probe was later expanded to include an investigation into X's AI chatbot Grok's dissemination of Holocaust denials and sexual deepfakes....