Two trains on route 761P derailed near Tong Fong Tsuen station. Routes 761P, 751, 710, 714,and 715 were delayed or suspended.
There were alternative free bus shuttles from Hung Tin Road to Yuen Long and from Hung Tin Road to Tin Yat.
Hung Tin Road Emergecy Platform seemed to be used
Citation: Hong Kong MTR and local residents
Though I don't know the details about why the trains derailed, the trains were produced in Mainland China.
If defects of the trains were discovered, inhabitants will doubt reliability of all the trains made in China.
