SingTel, Singapore based service provider with operations in 20 countries. SingTel subscribers were not able to access their mobile phone network on Jurong Island on Monday.
Viewers told Channel NewsAsia the problem started as early as 9am.
Responding to queries, Singtel said the glitch is due to damage on its fibre infrastructure, caused by a third-party building contractor doing piling work.
The telco said this affected some mobile, voice and broadband services on the island.
It added the incident happened at about 9.45am.
SingTel engineers are working to repair the damage.
The telco said it expects to restore the network by 9pm on Monday.
However, at 10.30pm, Singtel sent another statement saying recovery of services is still in progress.