Two men who were arrested by police investigating a bomb which was left near a policewoman's car at her home near Dungiven, have been released.
The bomb was discovered close to the part-time officer's car on the Ballyquin Road in Co Londonderry last Tuesday.
The two men aged 47 and 48 were arrested by police on Monday 26 April.
The 48 year-old man was further arrested on suspicion of possession of a Class A controlled drug, he was released on bail pending further enquiries.
The investigation is ongoing.