A father and son shot dead in a "targeted" double shooting in two quiet Cambridgeshire villages have been named locally.

Residents in both villages have identified the men as Gary Dunmore, 57, and his son Josh Dunmore, 32 - however formal police identification has not yet taken place.

Officers say they are also following a line of inquiry that the attacks followed a family dispute over a custody battle.

READ MORE: Follow our live blog on Bluntisham and Sutton shootings 

Police officers were called to properties in Meridian Close, Bluntisham, and then The Row, Sutton, last night (Wednesday March 29) with reports of gunshots.

Officers said the bodies of the men - aged 32 and 57 - had gunshot wounds and that both deaths were being treated as murder.

Three people - a 27-year-old man, 66-year-old man and 33-year-old woman - have since been arrested on suspicion of conspiracy to murder. 

READ MORE: Floral tributes left after fatal shootings of two men in Cambs villages

READ MORE: Crime Commissioner issues statement on Bluntisham and Sutton shootings

A car that was believed to have been used by the offender, a white Peugeot 208, and a shotgun have been recovered.

A Cambridgeshire Constabulary spokesperson said: "We have confirmed the victims are father and son.

"One line of inquiry is that it was a family dispute over a custody battle."

Anyone with information should report online or via the web chat service and quote Operation Scan.

Those without internet access should call 101.