The owner of the Pumphouse Pub in the Maritime Quarter told ITV News that armed police are on the scene blocking entry to the marina.
There's a police helicopter and armed police outside blocking the road. We haven't been asked to close the pub, but there are police and dogs on leads outside and nearby. The marina is also blocked off and no boats are allowed in or out.
The Grape and Olive restaurant at the top of the Meridan Tower has tweeted to say it's closed due to an incident.
Restaurant closed due to incident all bookings cancelled sorry for any inconvenience
More top news
I think it is fair to say that Autumn seems rather keen to get going. It certainly feels like it out there, with chilly nights this week!
It's almost time for the Rugby World Cup - here's how ITV Cymru Wales will be bringing you all the action.
RSPCA says one budgie was put to sleep and another survived after their cage was left in a road in Swansea. A pet snake was also left.