Police are investigating reports of two assaults in Carmarthen on Saturday night.
Six people are thought to have been assaulted in the town centre. One man is currently in hospital in a stable condition.
Officers were called at 11:35 to an incident in Lammas Street and another at Cambrian Place.
Police are currently in Water Street in Carmarthen and an armed-led inquiry is being carried out due to the possibility of a weapon having been used.
Anyone with information is asked to contact 101.