The Indian equity benchmarks closed at record highs for fifth straight session on Thursday led by gains in heavyweights like Tata Consultancy Services, Infosys, HDFC Bank, Larsen & Toubro, Ultratech Cement and Tata Steel. The Sensex rose as much as 483 points to hit record high of 63,583.07 and Nifty 50 index climbed as much as 129 points to hit an all-time high of 18,887.60. The Indian markets mirrored overnight gains in the US markets after the head of the Federal Reserve said the central bank could soon ease up on its aggressive pace of interest rate hikes aimed at taming inflation.