Ronan Kerr murder - 23-year-old woman released
A 23-year-old woman arrested as part of the investigation into the murder of Constable Ronan Kerr has been released.
The woman was arrested in Omagh on Wednesday.
Five men arrested in raids involving 200 police officers across three counties were earlier released from custody.
Constable Kerr was killed by a car bomb outside his home in Omagh on 2 April.
Seven searches were carried out in Coalisland, Toomebridge, Bellaghy and Ballyronan.
Police said they had taken away clothing, mobile phones, computers and cars for forensic analysis.
A £50,000 reward remains on offer for information leading to the arrest and conviction of those responsible for Constable Kerr's murder.
Constable Kerr, who joined the police in May 2010, was the second officer to have been killed since the Royal Ulster Constabulary became the PSNI in 2001.
Dissident republicans were blamed for his murder.