Questions are being asked after a woman, who had been detained for the 2005 manslaughter of her own mother, was let free and went on to kill a stranger in the street.
Nicola Edgington was today found guilty of murdering grandmother Sally Hodkin with a knife in Bexleyheath in October 2011 as well as attempting to murder another woman, Kerry Clark.
But hours before the attacks, Edgington had phoned emergency services from a Woolwich hospital and warned them she was dangerous. Ronke Phillips reports.
More top news
Police are hunting for the owners of this jewellery which they believe is stolen
Police investigating the murder of a 20-year-old man in East London have named him as Moosakhan Nasiri.
18 year old Shafiq Smith was charged early this morning with the murder of Omid Saidy