Hemp haul: Twenty slabs of herbal cannabis seized from a passenger at Hong Kong International Airport.

Customs officers have seized $680,000 worth of herbal cannabis from an incoming passenger at Hong Kong International Airport.

She will be charged with one count of drug trafficking and will appear in Tsuen Wan Magistracy on March 2.

About 8.30am today, officers intercepted the 30-year-old woman arriving from Johannesburg. Twenty slabs of the drug, 20kg in total, were found in her luggage.