In emergency situations, you can approach the local police, ambulance service, fire department and other emergency services by calling 999.

Useful numbers
Emergency services (police, fire, ambulance): 999
Travel Industry Council of Hong Kong: +852 2807 0707
Consumer Council: +852 2929 2222
Hong Kong Tourism Board Visitor Hotline: +852 2508 1234
Hong Kong International Airport: +852 2181 8888
Customs and Excise Department 24-Hour Hotline: +852 2815 7711
Hong Kong Immigration Department: +852 2824 6111
Department of Health: +852 2961 8989