A 17-year-old who stabbed to death Acton teenager Usaama Ali has been jailed for nine years.
The boy, who cannot be named due to his age, had admitted the manslaughter of Usaama, also 17, but was found not guilty of his murder.
He was sentenced at Isleworth Crown Court on Friday (September 9) to nine years in prison.
Usaama was stabbed in the heart following an argument with the defendant outside a café in Crown Street, Acton, on October 16 last year.
Local doctors and members of the public attended to the former Acton High School pupil, along with members of the emergency services, as he lay bleeding in the street.
But he was pronounced dead that afternoon, after being taken to St Mary's Hospital.
Killer disposed of knife, clothes and mobile phone
Isleworth Crown Court had heard how Usaama went to the café that day for breakfast, and became involved in an argument with his killer shortly before midday.
The defendant stabbed Usaama in the chest before running off down Crown Street and dumping the knife.
He later disposed of his clothes and a mobile phone he had been using, before he was arrested that evening at his home address in the Catford area.
The court heard evidence suggesting the pair had conversations between them regarding a Segway that Usaama was offering for sale.
A jury at Isleworth Crown Court had found the defendant not guilty on July 25 of Usaama's murder. He had earlier admitted manslaughter.
'Death shows tragic consequences of carrying a knife'
Detective Chief Inspector Rebecca Reeves, who led the investigation, said at the time: "Usaama's family are devastated by the loss of a son and brother.
"Why exactly this stabbing happened remains unclear. But what may have started out as a disagreement between two teenagers resulted in the death of a young man."
She added that the "tragic" case showed the consequences of young people carrying knives.
Elijah Herry-Gooding, 18, of West Street, Erith, was also charged with Usaama's murder but was found not guilty at Isleworth Crown Court on July 25.