The PSNI does not believe that three recently reported sexual assaults in the seafront area of Bangor are linked.
A police spokesman said that officers are following definite lines of inquiry in each case and are examining all available evidence.
In the most recent incident, a 19-year-old woman was attacked in a car park at Quay Street, close to the Coastguard station of the Co Down resort, between 11pm on Friday and 1.30am on Saturday.
On the night of Saturday, September 21, a 19-year-old woman was the victim of a sexual assault close to the McKee clock.
Three nights later a woman was raped at a coastal path in the Downshire Road area after accepting a lift from three men.
All three attacks have taken place late at night in the seafront area, despite it being well lit.
District commander Chief Superintendent Nigel Grimshaw said: "Local people can be assured that rigorous investigations are ongoing and there is no cause for alarm in the wider community.
"Police are grateful for the continuing support and co-operation of the local community as they carry out their inquiries. It is unusual for three reports of this nature to come so closely together."