Investigative journalist Tony Gosling, who thinks the attackers have not been monitored closely enough.
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UK police have arrested a tenth person in connection with the murder of a British soldier on a London street last week.
A fifty-year-old man was detained in south east London on suspicion of conspiracy to murder. It comes as around a thousand supporters of the far-right English Defence League march through London, protesting the killing.
The two primary suspects are still in hospital, with police waiting to speak to them.