The forensic investigation is still ongoing at the home of Oscar Pistorius following this morning's shooting, a spokeswoman for South African police has said.
She said the police would not confirm the identity of the shooting victim until her family formally identify her.
She confirmed there are no other suspects involved in the death.
More top news
Government ministers from the UK, France and China attended the event.
Tonight investigates the increasingly sophisticated methods criminals are using to target the elderly and defraud them of their savings.
If you've been anywhere near Trafalgar Square today you'll notice something different.