Peter Reeve, the gunman who shot dead off-duty officer Pc Ian Dibell yesterday, has been found dead in a churchyard in Writtle, near Chelmsford.
The family of Pc Dibell called him a "hero" and said he had paid for his actions "in the most devastating way".
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The victim was hit as she crossed the road at a pedestrian crossing in Tulse Hill.
The 24-year-old was unarmed and the incident is not being treated as terror-related.
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