Indian shares fell on Thursday, with the benchmarks slipping to three-month lows, after the U.S. slapped an extra 25% tariff on Indian exports, stoking concerns over the economic impact of heightened trade tensions.

Benchmark equity indices Sensex and Nifty declined in early trade on Thursday as US President Donald Trump slapped an additional 25 per cent duty -- doubling it to 50 per cent -- on Indian goods over New Delhi's continued imports of Russian oil.

Sensex, Nifty declined amid weak sentiment after US president announced fresh tariffs on Indian goods over buying Russian crude.