The Supreme Court Friday issued notice to Tata Motors on a petition by the West Bengal government challenging a Calcutta High Court order holding unconstitutional its Singur land act to reclaim 400 acres given to the company.

The apex court bench of Justices H.L. Dattu and C.K. Prasad, however, said the high court's interim order allowing the state government to keep the possession of the land would continue.

The Calcutta High Court, while holding the Singur Land Rehabilitation and Development Act, 2011, unconstitutional in a June 22 order had given the West Bengal government two months to appeal in the apex court against its verdict and allowed the government the possession of the land till then.