A police staff member and a police officer have been served with misconduct notices during a watchdog investigation into the Plymouth shootings.
Jake Davison, 22, shot dead five people in Plymouth – including a three-year-old girl – during a 12-minute shooting spree.
The Independent Office for Police Conduct (IOPC) said the police staff member who handled Davison’s original shotgun application and also decided to return the weapon would be issued with a gross misconduct notice.
A police officer who investigated the assault against Davison would be issued with a misconduct notice.
IOPC regional director David Ford said: “Based on the evidence gathered so far, we have now served disciplinary notices on two individuals within the force to advise them their conduct is subject to investigation.
“The serving of such notices will be kept under review.
“We intend to complete our investigation before the end of this year. We will share any lessons that may be learned with the force and wider organisations as they emerge.
“At the conclusion of our investigation, we will decide whether any individual has a disciplinary case to answer.”
The watchdog is also examining how Davison was handed back the weapon and certificate weeks before the shooting having been seized after admitting two assaults.
Davison was placed on a voluntary intervention programme – an alternative to be charged or cautioned – after admitting assaulting two youths in park in September last year.
His shotgun and licence were not seized for another three months until concerns were raised directly with the police by a member of staff working on the intervention programme.
In July last year Davison was given back his shotgun and certificate which he used for clay pigeon shooting.
On August 12, he shot his mother dead following a row at her home in Biddick Drive in Keyham.
He then went outside and killed three-year-old Sophie Martyn and her father Lee 43, in front of horrified onlookers as they walked their pet dog in Biddick Drive.
Davison then shot Stephen Washington, 59, in a nearby park, before shooting Kate Shepherd, 66, on Henderson Place. He then turned the gun on himself before armed officers reached him.
An inquest has previously been opened and adjourned with Davison’s victims all dying from shotgun wounds. Davison had also suffered fatal shotgun wounds having turned the weapon upon himself.