Vladimir Nachev stabbed Hakim Sillah twice in the chest with a “cruel irony” during the training session, a court heard.
A young offender has been found guilty of murder after he stabbed another teenager to death at a knife awareness course.
Vladimir Nachev, 18, attacked Hakim Sillah twice in the chest with a “cruel irony” during the training session, Isleworth Crown Court heard.
Nachev stabbed him in a “rapid sequence of infliction” at Hillingdon Civic Centre in Uxbridge, west London, last November.
Mr Sillah, 18, was taken to Hillingdon Hospital, but died later the same day.
Nachev, of West End Lane in Harlington, Hayes, was convicted of one count of murder and one count of wounding with intent.
Jurors were told the two young men were not friends but had a relationship “resulting from their involvement in the street selling of drugs in and around Hayes”.