Police investigating the murder of Durham businesswoman Carole Waugh have arrested a woman on suspicion of conspiracy to defraud.
It is the eleventh arrest in the inquiry, which began when the oil executive disappeared earlier this year.
Ms Waugh's body was found a week ago, in a car in a lock-up garage in South London.
The investigation has also covered a number of suspicious transactions, involving her bank account and London flat.
Two men have been arrested on suspicion of murder, and are facing fraud charges.