Taken from MTR's webbie...
"輕�綫車務�阻
Light Rail Service Disruption
�路�務嚴��阻 -
Major Rail Service Disruption -
(æ–¼1720時更新) 由於輕é�µ761P路綫於塘å�Šæ�‘站附近發生嚴é‡�事故，輕é�µè·¯ç¶«761P, 610, 614, 615 å�Š751來往塘å�Šæ�‘站和元朗站之間暫å�œæœ�務，直至å�¦è¡Œé€šçŸ¥ã€‚港é�µå…�費接é§�巴士ç�¾æ£è¡Œé§›æŽ¥è¼‰ä¹˜å®¢ä¾†å¾€å�—影響車站，ç�次為æ¯�å��分é�˜ä¸€ç�。ä¸�便之處，敬請原諒。
(Update at 1720 hours) Due to a serious incident affecting Light Rail route 761P near Tong Fong Tsuen, service for Light rail Routes 761P, 610, 614, 615 and 751 was suspended between Tong Fong Tsuen and Yuen Long Stops until further notice. MTR Free Shuttle bus is now in operation to serve passengers along the route, at 10 minutes interval. We apologise for the inconvenience caused."
http://tnews.mtr.com.hk/alert/tsi_2013051717394648.html
News article
http://www.4-traders.com/MTR-CORPORATION-LIMITED-1412694/news/MTR-Corporation-Limited-62-People-Hurt-Most-Lightly-As-Hong-Kong-Train-Derails-16869449/