front page of the official government webpage of HongKong (gov.hk)
the consequence of the "Manila Massacre" (as dubbed by a HongKong based newspaper)
The Outbound Travel Alert (OTA) System aims to help people better understand the risk or threat to personal safety in travelling to 60 countries that are the more popular travel destinations for Hong Kong residents (HKRs). When there are signs of threat in a place that may affect the personal safety of HKRs, the Security Bureau will assess and consider the need to issue an OTA taking into account factors such as the nature (e.g. whether it is targeted at travellers), level and duration of the threat.
Serious kidnap incident happened in the Philippines, residents should avoid all travel to the country; those who are already there should attend to their personal safety and exercise caution.