https://apnews.com/6cff8a5beed69b7667cca0fe69a0bd8d > ANKARA, Turkey (AP) — Turkish prosecutors launched an investigation into a cryptocurrency exchange Thursday over allegations it may have defrauded some 390,000 investors of an estimated $2 billion. > The office of Istanbul's chief prosecutor said it was probing the Thodex cryptocurrency exchange following complaints from users who could not access their assets.