Hong Kong police have shot and killed a man who brandished a 30cm knife at a shopping centre in Tuen Mun, with the force saying the officers involved had no choice but to open fire to save a passer-by.

The tragedy unfolded around 7pm on Thursday near Tuen Mun Town Hall on Tuen Wui Road.

Police said the 34-year-old man killed was a Hong Kong identity card holder. They said preliminary information from his family pointed to a history of mental illness, although authorities were still seeking to confirm that.

The man could also have been under the influence of drugs, police said. Officers found a retractable baton and a packet of suspected illegal drugs in his bag, they said.

olice said staff at The Peninsula Hong Kong in Tsim Sha Tsui filed a report at 10.55am that day after the guest claimed her Lady Arpels Pont des Amoureux timepiece had been stolen. The case has been classified as theft.

Investigators said the woman rented a room at the hotel from Monday to Friday. She reportedly met three non‑Chinese men at a bar in Central before inviting them back to her room to continue drinking at about 4am on Thursday.

Hong Kong and Shenzhen are establishing a white list for data transfers as part of an overarching effort to forge closer cross-border ties, which policymakers and business leaders see as essential to unlocking opportunities in artificial intelligence and fintech in the region.

“If you have a white list to facilitate the movement of sensitive data, biological data and samples between Hong Kong and [mainland] China, it would ensure trust between [parties sending and receiving information] because authorities on both sides would have already approved it,” said Ada Chung Lai-ling, Hong Kong’s privacy commissioner for personal data.

Transparency would be “very important” for the establishment of the data corridor between Hong Kong and the mainland, Chung said at the China Conference: Greater Bay Area, an event hosted by the South China Morning Post on Thursday.