They said the incident occurred just before midnight on Tuesday near Heng Tai House at Fu Heng Estate.
They said the car ignored instructions to stop and drove at a police officer, who then fired a round.
The bullet didn’t hit anyone, but the car lost control and hit roadside railings and overturned.
Police said they seized seven grams of suspected cocaine in the vehicle.
The 23-year-old male driver and a 21-year-old female passenger were arrested on suspicion of drug trafficking, and the male was also arrested for dangerous driving.
The force logged the incident as having taken place at 11.57 pm on Tuesday.
The woman was sent to hospital, after feeling unwell.
Police appealed for any witnesses to the incident to contact them.
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Last updated: 2021-02-03 HKT 08:40