Police on Sunday said they have arrested a 28-year-old man on suspicion of drug trafficking.

Officers said they confiscated 34kg of suspected methamphetamine and 1kg of ketamine, with a total street value of HK$18.5 million, in a Cheung Sha Wan flat.

"The police discovered that this drug-trafficking syndicate was renting an upscale private residential flat as a warehouse and a distribution centre for drugs. They took advantage of the low foot traffic and heavy security in an attempt to evade law enforcement," inspector Chang Yuen-lam told reporters.

"Police urge property owners to check the backgrounds of potential tenants such as occupation, income verification and the intended use of the rented unit before renting them out, so as to prevent their properties from being misused by criminals."

The suspect is set to appear in court on Monday.