A mum has been jailed after making up an alibi for her teenage son who stabbed a rival to death in a Snapchat row.
Karlene Joseph, 43, told police that she was having dinner with her son on the night that Hussein Al-Saabri was murdered.
The 23-year-old died after he was knifed in the stomach in front of horrified shoppers outside Debenhams in St Anns Shopping Centre in Harrow, northwest London.