The Supreme Court on Monday declined to entertain a plea by e-commerce giants Amazon and Flipkart, saying they must face inquiry by Competition Commission of India (CCI) for anti-competitive practices.

A bench headed by Chief Justice N.V. Ramana and comprising justices Vineet Saran and Surya Kant said: "Big organizations like you ( Flipkart and Amazon) should volunteer for inquiry... Inquiry has to be conducted."