The woman killed in a triple stabbing in Brixton on Monday has been named by police as 28 year old Keisha McKenzie.
40 year old Desmond Brooks has been charged with her murder and two counts of attempted murder. He has been remanded in custody to appear at the Old Bailey on Friday 2 August.
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Scotland Yard said two murder investigations have been launched following the separate incidents, which both happened in the past week.
Photos show the extraordinary surgical procedures to remove the growth.
The Met Police says 143 firearms have been handed in at stations across the capital in just seven days, including two antique machine guns.