Dyfed-Powys police have begun an internal investigation following allegations of unruly behaviour in Tenby by a party of off-duty police officers.
The alleged incident is believed to have occurred while the party of several men, who are stationed in the Carmarthen area, were in two pubs in the town in June.
It is in no way connected with another incident of unruliness in the town last month, when two groups of men were involved in a fight in the Three Mariners which spilled out onto the street.
Rumours at the time that off-duty police officers were involved were denied by the police.