(Reuters) -India’s Adani Group acquired a controlling stake in Holcim AG’s cement businesses in India in a $10.5 billion deal to become the second biggest cement producer in the country, Adani Group said in a statement on Sunday.

Asia’s richest person Gautam Adani’s conglomerate acquired 63.19% of Ambuja Cements Ltd and its subsidiary ACC in fierce bidding with local companies.

The divestment is the latest move by Holcim as it seeks to reduce its reliance on cement production, an industrial process which produces high levels of carbon emissions and has therefore deterred many environmentally-conscious investors.

In recent years the Switzerland-based company accelerated its efforts to get out of carbon-intensive cement making.

Ambuja and ACC have a combined capacity to produce at least 70 million tonnes of cement annually, second to UltraTech Cement which has 120 million tonnes capacity.

The Adani family, through an offshore special purpose vehicle, had entered into definitive agreements for the acquisition of Holcim Ltd’s entire stake in Ambuja and ACC, the Adani Group said in a statement.

Holcim said in a statement it had signed a binding agreement for the Adani Group to acquire Holcim’s business in India, comprising its stake in Ambuja Cement, which owns a 50.05% interest in ACC, as well as its 4.48% direct stake in ACC. Holcim would receive nearly $6.4 billion for the stakes.

The Adani Group said it would acquire more shares through an open offer.

The transaction is expected to close in the second half of 2022, Holcim said.

Adani Group’s flagship firm Adani Enterprises Ltd has two cement subsidiaries. Adani Cementation Ltd plans to build an integrated facility in western Gujarat and Maharastra states, according to an official in the Adani group.

Ambuja Cement has 14 cement plants, employing 4,700 people. ACC has 17 cement plants and 78 ready mix concrete factories and employs 6,000 people.

Official sources said the latest deal was the biggest divestment since Holcim merged with French rival Lafarge in 2015.

Since then the company has been selling fringe parts of its business as it seeks to concentrate on North America and Europe.

Last year the company sold its Brazilian operation for $1.025 billion and it also exited the Philippines and Indonesia.

($1 = 1.0017 Swiss francs)

(Reporting by Mrinmay Dey in Bengaluru, Rajendra Jadhav, Rupam Jain in Mumbai, John Revill in Zurich; Editing by Peter Graff and Emelia Sithole-Matarise)