A 14-year-old and a 17-year-old have been killed in two separate street stabbings in London.
Amro Elbadawi (l) and Devoe Roach died within hours of one another
Amro Elbadawi, 14, who lived on the Mozart Estate in West Kilburn, west London, was injured in Dart Street, Queen's Park, on Thursday afternoon.
Police said a 16-year-old boy arrested the same day was still being quizzed.
Earlier on Thursday Devoe Roach, 17, died when he was stabbed close to his home in Stamford Hill, Stoke Newington, north London.
Police said they had an open mind about the circumstances and motive behind the attack on Amro.
Emergency services were called to Queen's Park Health Centre, near Dart Street, at about 1715 GMT.
2008 TEENAGE LONDON DEATHS
1 January: Henry Bolombi, 18, stabbed
5 January: Faridon Alizada, 18, stabbed
21 January: Boduka Mudianga, 18, stabbed
26 January: Fuad Buraleh, 19, beaten
19 February: Sunday Essiet, 15, stabbed
23 February: Tung Lee, 17, stabbed
29 February: Ofiyke Nmezu, 16, beaten
13 March: Michael Alexander Jones, 18, stabbed
14 March: Nicholas Clarke, 19, shot
27 March: Devoe Roach, 17, stabbed
27 March: Amro Elbadawi, 14, stabbed
Amro, a British national with family originating from Egypt, was taken to hospital but later pronounced dead.
Det Ch Insp Andy Mortimer, from the Metropolitan Police's Homicide and Serious Crime Command, said: "Amro's life has been cut short in a needless manner before it has really begun.
"He was loved by his family and friends who are devastated.
"I would urge anyone who may have information to come forward and help us with our investigation."
Seven hours earlier, officers found Devoe lying on the pavement with a stab wound to the chest.
He was taken to the Royal London Hospital where he died an hour later.
Police believe Devoe was walking in Stamford Hill with a friend when he became involved in a row with the suspect.
His attacker, described as being of Asian or Turkish appearance, aged between 18 and 22 and about 5ft 9in, stabbed him in the chest before running off along Olinda Road.
Police have appealed for anyone who saw the argument to contact them.