Hyderabad, Apr 18 (UNI) Bharat Rashtra Samithi (BRS) Working President KT Rama Rao (KTR) has issued a sharp public appeal to Prime Minister Narendra Modi, demanding immediate action and a full-fledged investigation into the alleged Rs 10,000 crore scam and environmental devastation in Telangana’s Kancha Gachibowli.