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A Chinese man was arrested at the JKIA on Monday night for having ivory valued at Sh300,000 in the form of bangles.
Police said the 56-year-old man was on his way from the DRC to China.
Several Chinese nationals have been arrested at the airport in Nairobi for trafficking illegal items.
A 40-year-old man found with ivory valued at Sh60,000 was arrested last week on his way from Cameroon to Guangzhou in China.
On April 5, two Chinese nationals were apprehended at the airport for allegedly trafficking assorted illegal wildlife trophies.
Yang Yu and Xu Miaohong were arrested by KWS officers from the Canine Unit while on their way from Lagos in Nigeria to Guangzou.
The government issued a three-week amnesty for handing in all wildlife trophies, ivory and rhino horn ahead of the biggest burn in April.
President Uhuru Kenyatta, patron of the Giants Club summit comprising Uganda, Gabon and Kenya, will preside over the destruction of 120 tonnes of ivory collected so far.