(Reuters) -Jane Street plans to contest a finding by India's financial regulator that the U.S. trading firm engaged to manipulate the country's markets, the Financial Times reported on Monday. Jane Street's senior management said it was "beyond disappointed" by the regulator's "extremely inflammatory" accusations and were "working on a formal response" to rebut them,

India’s securities regulator plans to boost its surveillance systems to better detect complex trading strategies after taking action against high-speed trading giant Jane Street Group for alleged market manipulation.

Sebi has order a ₹4,844 crore seizure from Jane Street entities, marking the largest action against a foreign firm.