A man has been arrested in Narberth after police received a number of calls that he may have been in possession of a knife.
Police and armed units were called to the area just after 9pm yesterday evening. A man was arrested at an address in Market Square without incident.
A 27-year-old man remains in police custody in Haverfordwest.
A museum in west Wales which reopened nine years after volunteers launched a campaign to find it a home has been shortlisted for the UK's richest arts prize.
Narberth Museum, in Pembrokeshire faced an uncertain future when it was forced to close its doors in 2003 following the sale of its home. But it reopened last summer, in a former whisky and brandy warehouse, after volunteers spent eight years raising funds.