A gunman shot dead five people after a row with his mother, an inquest has heard.

Jake Davison, 22, killed his mother Maxine Davison, 51, at her home in Plymouth before going outside and shooting dead four others in a 12-minute attack on the evening of August 12.

Three-year-old Sophie Martyn and her father Lee, 43, were shot dead 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.

The apprentice crane operator then turned the gun on himself before armed officers reached him.

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During a 10-minute hearing on Thursday, Ian Arrow, senior coroner for Plymouth, Torbay and South Devon, formally opened the inquests into Davison’s victims and received evidence from police of identification and the brief circumstances of their deaths.

Detective Steve Hambly, the senior investigating officer, told the hearing all five had died from shotgun wounds and the results of histology and toxicology tests were pending.

He said Mrs Davison, a former trawler woman, had died at her home address in Biddick Drive, in the Keyham area of the city.

“The circumstances of her death are that Maxine sustained fatal gunshot wounds following an argument with her son,” he told the court.

“Police are not looking for any other persons in connection with Maxine’s death. On present evidence the medical cause of death has been ascertained as shotgun wounds to the torso and head.”

Mr Hambly said Mr Martyn, a married carpenter, was shot dead in Biddick Drive.

“The circumstances of his death was while walking with his daughter Sophie and the family dog, Lee was fatally shot by an assailant who was not known to him,” the officer said.

“The police are not looking for any other persons in connection with Lee’s death.

“By present evidence the medical cause of death has been ascertained as gunshot wounds to the torso and head.”

Referring to Mr Martyn’s daughter, the detective went on: “Sophie died on Biddick Drive on August 12 and the circumstances of her death are while out walking with her father Lee and the family dog, Sophie was fatally shot by an assailant who was not known to her.

“Police are not looking for any other person in connection with this evidence.

“On present evidence the medical cause of death has been ascertained as shotgun wounds to her head.”

The hearing was told Mr Washington, who was a carer for his wife, was shot while out walking his dogs in parkland close to Biddick Drive.

Mr Hambly said: “Whilst out walking his dogs, Stephen was fatally shot by an assailant not known to him. Police are not looking for any other persons in connection with Stephen’s death.

“On present evidence the medical cause of death has been ascertained as shotgun wounds to the chest.”

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The final victim of Davison’s rampage was married artist Katherine Shepherd, a married artist, who was fatally shot on Henderson Close.

Mrs Shepherd, who was known as Kate, was taken to Derriford Hospital where she died that evening, the inquest heard.

“The circumstances of her death are that Katherine was shot by an assailant not known to her while walking along Henderson Place,” the detective said.

“Katherine received immediate medical attention and was conveyed to Derriford Hospital. Despite best efforts of medical staff Katherine sadly passed away.

“The police are not looking for any other persons in connection with Katherine’s death. On present evidence the medical cause of death has been ascertained as shotgun wounds to the abdomen.”

The coroner adjourned all inquests and fixed a provisional date for pre-inquest reviews on December 9.

An inquest into Davison will be opened and adjourned later.