The inquest into the Horden shootings has heard that the gunman did not have his licence revoked - despite threatening to kill himself.
Durham Police confiscated Michael Atherton's guns from him in 2008 but he was given them back at a later date.
He went on to shoot his partner and two members of her family before killing himself on New Year's Day last year.
Watch the full report from Frances Read below.
The coroner has ruled that the deaths of three members of the same family, and their shooter, could have been avoided.
An inquest has heard how a man who went on to kill three members of his family before turning the gun on himself had been warned by police.
The inquest into the deaths of a man who shot himself and three members of his family on New Years Day 2012 has been taking place today.