Police have made an arrest of a 19-year-old man in connection with the murder of Rishmeet Singh in Southall.
Rishmeet’s mother turned up to the scene as paramedics battled to save her son’s life.
Police said Rishmeet’s family have been updated on the arrest and are being supported by specially trained officers.
Friends said Rishmeet was his mother’s carer and revealed he would work odd jobs to support her.
DCI James Shirley, who is leading the investigation, said: “My thoughts continue to be with Rishmeet’s family and friends following this development in our investigation.
“While one man remains in custody, we still need anyone who has any information about the events that led up to Rishmeet’s death to come forward and speak to us.”
Anyone with information that could assist police is asked to call the incident room on 0208 721 4266 or tweet @MetCC and quote CAD 7400/24NOV. Alternatively, they can contact the independent charity Crimestoppers anonymously, on 0800 555 111.