The Tanzania-registered container vessel GOLDEN STAR 1 sank approximately 6 kilometres off Batam, Indonesia, on June 5 at around 2230 local Singapore time.
According to initial reports, the vessel took on water before sinking.
Indonesian authorities rescued all nine crew members safely. No injuries have been reported.
The Maritime and Port Authority of Singapore (MPA) has issued navigational broadcasts advising vessels in the area to exercise caution.
MPA has also asked ships transiting the area to report any sighting of containers adrift.
Despite the incident, vessel traffic through the Straits of Malacca and Singapore remains unaffected.
Authorities have not reported any oil pollution in Singapore waters.
MPA said it has informed the Indonesian authorities and is continuing to monitor the situation.
