A man suffering from paranoid schizophrenia has admitted stabbing a total stranger to death in the street.
Dogan allegedly carried out five other attacks
Ismail Dogan admitted the manslaughter of Ernest Meads in Edmonton, north London, on 23 December, on the grounds of diminished responsibility.
But Dogan, 30, of Tottenham, denied attempting to murder five other people on the same day.
He was remanded at Broadmoor special hospital and will be sentenced for manslaughter after an Old Bailey trial.
David Symes, 31, Roger Levy, 49, Vicki Cann, 30, and 76-year-old Raymond Day were stabbed in different streets in Edmonton and Haringey between 0745 BST and 0907 BST on 23 December 2004.
Father-of-two Mr Meads, 58, was stabbed in the chest and the upper body in Meridian Way, Edmonton. He died later in hospital.
Dogan will stand trial on 27 January 2006.