A court case brought by some of the family of PC David Rathband against Northumbria Police is due to begin today (January 12).
Mr Rathband was shot in the face and blinded by gunman Raoul Moat in 2010. He then killed himself in 2012.
The officer's twin brother Darren and sister Debbie Essery are taking Northumbria Police to court, claiming the force was negligent in not passing on the warning to staff on patrol that night.
Raoul Moat had phoned 999 to say he was hunting for police.
It will be heard at Newcastle Crown Court and will last two weeks.
The inquest into the death of PC David Rathband, who was originally from Staffordshire, will take place today.
PC Rathband was shot and blinded by gunman Raoul Moat in 2010. He was found dead at his home in February two years later.
Greater Manchester Police have said they do not believe the weapon used in the murder of PCs Fiona Bone and Nicola Hughes was smuggled into the UK by Steven Greenoe.
"There is no evidence to suggest the guns came from him. It is not a line of inquiry." - Greater Manchester Police."
Greenoe a former US Marine who lived in Shrewsbury was jailed in January for a major gun-smuggling operation from America into the UK on commercial transatlantic flights.
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The gun used in the murder of two unarmed police officers in Manchester on Tuesday may have been smuggled by Shropshire man.Read the full story ›
It's emerged that one of the two female police officers shot dead in Manchester yesterday, grew up in the East Midlands. Fiona Bone was killed as she attended a suspected burglary.
Her death has renewed calls for all officers to be routinely armed, something backed by the twin brother of PC David Rathband.
But a retired Chief Constable living in Shropshire, whose police officer son was also killed while on duty, insists the force shouldn't carry arms.
Following the deaths of two policewomen in Manchester yesterday there are renewed calls to re-open the debate on if police should be armed.Read the full story ›
More than a hundred people have paid their last respects at the funeral of PC David Rathband in Stafford.Read the full story ›