Det Supt Pam Kelly appealed to anyone with information about suspicious incidents or people in the area in the week up to Friday to come forward.
Police have named a woman found murdered at her Pembrokeshire home as they continue the search for her killer.
The body of Angelika Dries-Jenkins, 66 was discovered in the Providence Hill area of Narberth on Friday.
Dyfed-Powys Police say she could have been killed at any time last week.
Officers set up a road block nearby on Saturday and have appealed for help from local people who may have seen anything or anyone suspicious.
Police are expected to release more details about the victim and the crime later on Sunday.
Det Supt Pam Kelly said members of the community who had seen any suspicious activity should come forward as they may have vital information.
She said such incidents did not happen very often in the Dyfed-Powys Police area.
Anyone with information is asked to call 101.
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