A nine-year-old boy remains in hospital as detectives investigate links between his stabbing, the murder of a retired teacher and an incident in which an eight-year-old girl was chased through a garden.
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Cheryl Grimmer vanished from inside a beach shower block in Wollongong, Australia, in 1970, when she was just three.
Pc Keith Palmer was on the front line and because of his actions, the Westminster attacker was unable to kill anyone else.
People in their 30s face the possibility of drawing their pensions at 70, if the government follows the report's recommendations.