A 24 year-old man is being questioned following a drugs raid in Cardiff Bay.
Armed police accompanied neighbourhood officers during the search at an address on Burt Street on Thursday.
Around £600 worth of class A drugs was seized, after detectives received intelligence about anti-social behaviour and drug misuse at the property.
The suspect, arrested on suspicion of possessing Class A drugs with intent to supply, remains in custody.
According to South Wales Police, the raid was carried out as part of an ongoing campaign.
Inspector Abi Biddle said: "Drug dealing and misuse will not be tolerated. The Project Pinpoint campaign is about encouraging communities to report any behaviour they find troubling so we can gather vital intelligence that allows us to take appropriate action."
"We will continue to act on information received from members of the public accordingly."

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