The Singapore Civil Defence Force (SCDF) said in Facebook post that they were alerted to the incident at 8.33am and had sent 23 injured passengers to hospitals.
Earlier, SMRT announced on Twitter that commuters should expect 30 minutes added train travel time between Jurong East and Joo Koon stations, only saying that a train fault had occurred.
The first train collision occurred August 5, 1993, when an east-bound train stopped longer than scheduled at a station due to a technical fault and was then hit by another train, according to the National Library Board's resources. "SMRT and LTA are investigating the incident". A total of 23 injured passengers were conveyed to hospitals - although the majority of them sustained only minor injuries, that means at least a couple of them sustained slightly more serious injuries due to the train collision.
Singapore's mass-rapid rail system suffered its second collision since the network began in 1987, when a train operated by SMRT Corp. hit a stationary one Wednesday.
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About half the injured passengers were taken to the National University Hospital.
Another eight sustained minor injuries and were assessed to be under the P3 category, which includes sprains and minor head injuries. Facebook user Mei Anne said she and fellow passengers fell on their backs, and that she was in pain.
She also posted a close-up shot of parts of the trains that collided, but we can't discern any noticeable damage.
An independent inquiry panel found that the accident was caused by a 50L oil spill from a maintenance locomotive which had been carrying out maintenance work at about 5am on the day of the accident.