NEW DELHI (Reuters) - Central Bureau of Investigation (CBI) on Friday arrested the founder of PACL Ltd over allegations the property company cheated investors of $6.8 billion, in what local media is calling the country's biggest financial scandal.The arrest of Nirmal Singh Bhangoo comes 17 months after markets regulator the Securities and Exchange Board of India (SEBI) ordered PACL to return money to millions of investors, saying the company was running an illegal investment scheme. The scheme promised depositors returns on investments in agricultural land, the regulator said. PACL has argued ...