A 25-year-old man who was arrested on suspicion of causing serious injury whilst dangerous driving has now been arrested on suspicion of murder, according to the Metropolitan Police.
The suspect attended a police station in South London on Friday 20th September after police officer Andrew Duncan was struck and critically injured in a hit and run collision. His re-arrest follows PC Duncan's death earlier today.
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The killer's solicitor has written to police challenging them to prove his confession.
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