MUMBAI, JUL 28 (PTI): Benchmark indices Sensex and Nifty ended flat on Tuesday as investors’ sentiment turned cautious ahead of key global central bank policy meetings this week and heavy selloff across Asian markets. The 50-share NSE Nifty slipped 10.60 points, or 0.04%, to end at 23,985.35. In Asian markets, South Korea’s KOSPI tanked 10.84%. “Indian equity markets ended largely flat as a broad selloff across Asian markets weighed on investor sentiment,” Ponmudi R, CEO of Enrich Money, an online trading and wealth tech firm, said. US markets ended on a mixed note.