RPT-CORRECTED-India's Mahindra to invest $1 bln in plant - govt

(Corrects headline and text to show value of investment at 40 billion rupees ($1 billion), not 4 billion rupees ($100 million))

MUMBAI, March 31 (Reuters) - Mahindra & Mahindra Ltd (MAHM.BO), India's top utility vehicle maker, will invest 40 billion rupees ($1 billion) in a plant in western India, an official of the state government of Maharashtra said. ($1=39.9 rupees) (Reporting by Rina Chandran; Editing by John Mair)