更新（9.50AM）：SMRT今早9时47分在推特发文表示，南北地铁线蔡厝港站至裕廊东站之间，地铁列车服务逐步恢复正常运作。SMRT9时50分表示，已停止蔡厝港站至裕廊东站之间的免费巴士服务。
[NSL]UPDATE: Trains are progressively returning to normal speed between #ChoaChuKang and #JurongEast.
— SMRT Corporation (@SMRT_Singapore) June 12, 2017
SMRT今早9时10分在推特（Twitter）发文表示，蔡厝港站至裕廊东站之间的列车服务因信号系统故障而延误，乘客通勤时间延长20分钟。
[NSL]: Due to signalling system fault, pls add 20mins travelling time btw #ChoaChuKang & #JurongEast. Train service is still available. — SMRT Corporation (@SMRT_Singapore) June 12, 2017
SMRT9时13分表示，蔡厝港站至裕廊东站之间将提供免费巴士服务。
[NSL] UPDATE: Free regular bus service is available between #ChoaChuKang and #JurongEast station.
— SMRT Corporation (@SMRT_Singapore) June 12, 2017
更新（9.34AM）：南北地铁线因信号系统故障（signalling fault），导致乘客通勤时间延长10分钟。
[NSL]UPDATE: Pls expect 10mins travel time btw #ChoaChuKang & #JurongEast due to signalling system fault. Train service is still available.
— SMRT Corporation (@SMRT_Singapore) June 12, 2017