India, March 17 -- The Bharatiya Janata Party (BJP) on Monday announced that it would challenge the Karnataka government's proposal to provide 4 per cent reservation for Muslims in government contracts in court, calling the move an "unconstitutional misadventure."

The party vowed to oppose the decision at all levels-inside the legislature, on the streets, and in Parliament-until it is rolled back.

The controversy erupted after the Karnataka Cabinet on Friday approved an amendment to the Karnataka Transparency in Public Procurements (KTPP) Act. The amendment reserves 4 per cent of government contracts in civil works valued up to Rs.2 crore and good/services contracts up to Rs.1 crore for Muslims.

Addressing a press conference at the BJP...