The trial of two men charged with the murder of oil executive Carole Waugh, whose body was found with a single stab wound inside a car at a garage in south-west London in August 2012, is due to begin today.
Rakesh Bhayani, 40, and Nicholas Kutner, 47, are charged with murdering the 50-year-old, who disappeared from her central London home.
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Assema Kedir Habib spoke at the commemoration of her brother Hashim Kedir and his family.
A 95-year-old man has been arrested on suspicion of murder after a 61-year-old female carer died after she suffered head injuries.
The man told his pensioner victim his floor needed replacing and offered to carry out the work.