Two firefighters suffered burn injuries during the operation and were transported to Singapore General Hospital, says the Singapore Civil Defence Force.

Two firefighters suffered burn injuries during the operation and were transported to Singapore General Hospital, says the Singapore Civil Defence Force.

SCDF said it is investigating the incident and that the town council is required to rectify the dry rising main to ensure it is in proper working condition.

Three of the people rescued were unconscious, said the Singapore Civil Defence Force.