The police officers chasing a driver “disengaged” before a fatal crash, the Independent Office for Police Conduct has said.

The police pursuit took place on the B480 through Chiselhampton as a black Vauxhall Astra smashed into a wall outside the front of a home opposite the Coach and Horses pub at around 9.25pm on Thursday, March 7. 

The driver, aged 20, from Benson and a 23-year-old passenger from Wallingford were both taken to the John Radcliffe Hospital, with police confirming yesterday (March 12) that the driver has died while in the hospital.

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The black Vauxhall Astra overtook an unmarked police vehicle on the incorrect side of the road sparking the chase, Thames Valley Police have said.

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Officers in the unmarked vehicle illuminated their blue lights to signal the vehicle to stop, but it continued through the village before crashing into the wall.

The force made a mandatory referral to the Independent Office for Police Conduct (IOPC) due to the crash occurring after a police chase.

An IOPC spokesperson said the pursuing officer had "disengaged" with the car before the crash and that Thames Valley Police must carry out its own investigation.

The independent body added that if the investigation does not identify any conduct issues, the force must provide a copy of its final report for the IOPC to review.

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An IOPC spokesperson said: “Having carefully considered a referral from Thames Valley Police received on March 8, we have decided that, given a man has sadly died, this incident should be investigated, and that the investigation should be carried out by the force.

“The police pursuit appears to have been short in length and the officer who was driving appears to have disengaged prior to the vehicle collision.

“If the investigation does not identify any conduct issues, the force must provide a copy of its final report for the IOPC to review, offering a level of independent oversight.”

Flowers, candles and a wreath reading “TZ” have been left at the remains of the destroyed wall while witness appeal signs have been placed on the road near the scene.

The family of the man who has died is being supported by specially trained family liaison officers.

The passenger who was also treated in the hospital has since been discharged.

Inspector Scott Long of the Roads Policing Unit added: “First and foremost, my thoughts and the thoughts of all of us at Thames Valley Police are with the family and friends of the man who has sadly died.

“I am today renewing our appeal to anybody who witnessed the collision, or the moments leading up to it, to please get in touch with Thames Valley Police.

“I would again ask for any drivers who were in the area to please check their dash-cams and contact us if it has captured anything that may assist our investigation.

“You can contact us by making a report online or by calling 101, quoting reference 43240108500.”