BENGALURU: Indian billionaire Gautam Adani's family has increased its stake in building materials company Ambuja Cements after it infused 66.61 billion rupees ($799.05 million) in equity, Ambuja Cements said in an exchange filing on Thursday. ($1 = 83.3620 Indian rupees)

(Reporting by Manvi Pant in Bengaluru; Editing by Sonia Cheema)