Just after 7am, a Peugot 206 collided with a Vauxhall Astra van on the westbound slip road of junction 7 and the driver of the 206, a 36-year-old man, suffered fatal injuries in the crash and died at the scene.
Police watchdog, the Independent Police Complaint Commission (IPCC), revealed on Friday (December 9) it would be investigating the incident because the Peugot had been followed by a marked Thames Valley Police vehicle prior to the crash.
IPCC associate commissioner Guido Liguori said: “I send my thoughts and condolences to the family and friends of the man, and all those affected by this sad death.
“Investigators have made contact with his family to explain our role, and will be keeping them updated as the investigation progresses.
“It is likely a number of people may have witnesses the incident and we asked that they get in touch with us as soon as possible.”
The man's family have been informed of his death but he is yet to be formally identified.
There were no passengers in the Peugot and the van driver suffered minor injuries.
IPCC investigators attended the scene and took initial accounts of the crash from officers.
Radio communications and computer data from the car will be analysed to help understand the circumstances around the crash.
The independent investigation will examine the actions and decisions of officers involved.
Anyone with information is asked to contact the IPCC on email@example.com or 0800 015 4876.
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