The main opposition Congress party has accused Modi and his Bharatiya Janata Party (BJP) of shielding Adani and stonewalling independent investigations into his dealings in the country, charges the ruling party has denied. Congress workers have also held street protests demanding a parliamentary probe.

Follow Bloomberg India on WhatsApp for exclusive content and analysis on what billionaires, businesses and markets are doing. Sign up here.Stock benchmarks in India surged on Monday as Prime Minister Narendra Modi’s Bharatiya Janata Party-led alliance secured a thumping victory in the nation’s wealthiest state of Maharashtra.

Polling in the two states has been widely seen as a test of Modi's popularity after his party returned to power five months ago in national elections truncated for a third term without a parliamentary majority,