It wasn't until Oct 11 that the full system was back in operation. Tseung Kwan O Station, the last to finish repairs, provided only limited services.

By the time the station reopened, only four of 26 turnstiles, one of five ticket machines, and four of seven escalators were operational, according to the MTR's chief of operations, Sammy Wong Kwan-wai.

Some glass doors on platforms that had been smashed were patched with aluminum boards. The rail operator also cleared the debris created by the rampage which had been thrown onto the rail tracks.

Two months earlier, on Aug 5, MTR train services were paralyzed when anti-government protesters launched a "non-cooperation movement". Masked protesters pressed emergency buttons on the carriages, and blocked train doors from closing during rush hours. Eight lines had to suspend services.