A domestic violence report is due to be published following the conclusion of an inquest into the deaths of a council leader and his wife in Norfolk.
Keith Johnson, 58, killed his wife Andrea, 44, outside their home in Compit Hills, near Cromer, before turning the gun on himself in December.
Her body was found lying in a neighbour's garden while his was found inside their home.
Mr Johnson, leader of North Norfolk District Council, is understood to have used his wife's shotgun, which she held legally for clay pigeon shooting, in the killings after finding out she planned to leave him.
The couple had been together for 18 years and married in 2004, although police said they had an "open relationship".
The deaths shocked the community, with locals speaking of how they had been a well respected and popular couple.
After the inquest finishes a domestic violence homicide review, examining how organisations including the police and healthcare bodies handled the case, will be published.
It is understood the report will reveal a history of abuse within the relationship