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Knuckle dusters, knives and swords were seized from a home after police were warned weapons imported from America were set to be delivered to the address.
Officers raided the property in Norfolk Road, Cliftonville, yesterday after receiving the tip-off.
They also impounded cannabis and cash discovered at the address.
A police-run Twitter account described the haul as "substantial".
A spokesman for the force told KentOnline: "When officers searched the property they seized a number of weapons including knuckle dusters, knives and swords.
"They also found a quantity of cannabis and cash.
"A 35-year-old man and 35-year-old woman, both from Cliftonville, were arrested on suspicion of being concerned in the supply of a controlled drug and the importation of prohibited weapons."
The suspects have since been released under investigation.
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