Singapore shares remained red on Tuesday after the city-state reported a decline in its export and import prices for March, coupled with the continued confusion regarding a potential dialogue between the US and China over their trade wars.

The Straits Times Index (STI), a key benchmark for the Singapore Exchange, ranged between 3,800.11 and 3,838.14 throughout the day. It ended the session at 3,805.18, down 6.62 points or 0.2% compared to Monday's close.

In economic news, Singapore's Import Price Index fell 4.0% year on year in March, following a 3.4% decrease in the preceding month, the Department of Statistics reported.

Meanwhile, Singapore's Manufactured Products Price Index rose 3.3% year over year in March, extending a 6.0% gain in February, data shoed.

In company news, shares of Keong Hong (SGX:5TT) surged nearly 30% at the close after the company and MCSK mutually agreed to extend the completion date of the proposed disposal of a 20% stake in Katong Holdings to June 30.

Shares of Amara Holdings (SGX:A34) surged nearly 26% after the company disclosed that it will be appointing an independent financial adviser to help the company directors with the recent acquisition offer made by DRC Investments.

Meanwhile, Lippo Malls Indonesia REIT's (SGX:D5IU) net property income during the first quarter of the year declined by 2.4% to SG$29.2 million from SG$29.9 million a year earlier.

STI fell 0.2%; Nio up 5%; Sembcorp up 2.6%; OCBC up 1%; Yoma Strategic fell 4%; SGX fell 1.6%; SATS fell 1%.