May 20 (Reuters) - Sri Lankan shares ended lower on Thursday, as industrial stocks declined, after the central bank left interest rates unchanged. * The CSE All-Share Index ended 0.65% lower at 7,293.59. * Sri Lanka’s central bank left its key policy rates steady on Thursday amid the renewed challenges posed by the third wave of the COVID-19 pandemic. * The central bank also said it remains committed to maintaining the current accommodative monetary policy stance. * Conglomerates LOLC Holdings and Expolanka Holdings were the top two drags on the CSE All-Share Index, falling 1.4% and 2.1%, respectively. * Trading volumes fell to 116.9 million from 143.7 million in the previous session. * Foreign investors were net sellers in the equity market, offloading shares worth 138.9 million Sri Lankan rupees, according to exchange data. * Equity market turnover was 1.31 billion rupees, the data showed. * For a report on global markets, click * For a report on major currencies, click (Reporting by Sachin Ravikumar in Bengaluru; Editing by Vinay Dwivedi) Our Standards: The Thomson Reuters Trust Principles.