A 29-year-old woman has been arrested as part of the investigation into the murder of a businessman in Templepatrick, Co Antrim, in April last year.
Geoff Kerr, 60, was shot dead during a struggle with intruders at his house.
The PSNI says the woman was detained in the Antrim area and she was taken to the police station at Antrim town for questioning.
A number of people have already appeared in court charged in connection with the killing.