By Dhwani Pandya, Shilpa Jamkhandikar and Shivam Patel MUMBAI/NEW DELHI (Reuters) -The finance chief of India's Adani Group on Friday rejected U.S. allegations that executives, including Chairman Gautam Adani,

U.S. authorities have accused Gautam Adani, his nephew Sagar Adani and managing director of Adani Green, Vneet S. Jaain, of being part of a scheme to pay bribes of $265 million to secure Indian solar power supply contracts, and misleading U.S. investors during fund raises there.

NEW DELHI -- Asia’s controversial richest man, Indian tycoon Gautam Adani, is again in the spotlight. His companies’ stocks plunged up to 20% on Thursday after he was indicted by U.S. prosecutors on charges he duped investors in a massive solar energy project in India by concealing that it was being facilitated by an alleged bribery scheme.