| West Mercia Police confirmed that Christopher Foster's body had been
identified after being found at Osbaston House, Maesbrook, Shropshire.
Tests are still being carried out on the third body, but it is believed to be his 15-year-old daughter Kirstie.
His wife, Jill Foster, 49, died from a gunshot wound to the head.
Det Supt Jon Groves said: "Detectives investigating
the arson and murders at Osbaston House in Maesbrook in the early hours
of 26 August believe Jill and Kirstie Foster were killed by Christopher
Foster."
'Shot tyres' Mr Groves said that CCTV showed a man "clearly believed to be
Foster" walking from stables with a gun and moving a horsebox in front
of gates at the property.
He said the CCTV footage, from a camera at the property showed Mr Foster "with what appears to be a rifle in his hands".
"It also shows outbuildings going up in flames at around the
same time and a large horsebox being driven down the driveway, blocking
the main gates to the premises.
"A man, again believed to be Mr Foster, is seen to get out of the vehicle and apparently shoot out two of the tyres."
A cause of death for Mr Foster, who was 50, has still to be
established. His body was identified from dental records on Tuesday
afternoon.
Police said a rifle discovered near the couple's bodies had been identified as belonging to Mr Foster.
Mr Groves added: "The location of the third body found on Sunday
suggests that it is Kirstie Foster but further tests are needed on this
body to confirm identity."
Mr Foster amassed his fortune developing insulation technology for oil rigs.
But court documents show his company, Ulva Ltd, had gone into
liquidation and owed about £800,000 in tax. It also faced legal action
from one of its suppliers for thousands of pounds.
Mr Groves said he had taken the decision to reveal details of
the police inquiry in an attempt to end speculation which has
surrounded the case, and to give early answers to the local community.
"This is a very complex and unusual case and around 100
officers and staff have been working hard to establish the
circumstances leading up to the fire," he said.
He said the investigation itself was "far from over" and the examination of the site would continue for several days at least.
Martin Timmis, of Shropshire Fire and Rescue Service, said an
investigation was being carried out to find exactly how the fire was
started.
"It's clear from what we have seen with the aerial footage that
there is likely to have been more than one seat of fire," he said.
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