SINGAPORE (THE BUSINESS TIMES) - Singapore shares drifted lower on Tuesday (May 4) as locally transmitted Covid-19 fears persist, amid mixed trading in shares across major markets in the region. The benchmark Straits Times Index (STI) fell 0.2 per cent to end at 3,179.13, marking the third consecutive day of decline. The top gainer on the index was Dairy Farm International, which saw its shares rise 1.9 per cent to close at US$4.39. Other top gainers include Thai Beverage and Mapletree Logistics Trust, which rose 1.4 per cent and 1 per cent respectively Finishing at the bottom of the STI performance table on Tuesday was Capitaland, which fell 2.5 per cent to $3.58 as it went ex-dividend.