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Cardiff Crown Court Jails Kai Pennell for Life Over Jealous Murder of MMA Coach Duane Keen

The judge said he killed out of sexual jealousy to punish his former partner.

Overview

  • Pennell, 35, received a life sentence with a minimum term set at 23 years, later recorded as 22 years and 138 days to account for time spent on remand.
  • He pleaded guilty to murder and criminal damage to Rebecca Phillips’ car, while prosecutors chose not to pursue a threats-to-kill charge.
  • The attack followed forced entry into Phillips’ flat in Blaenavon, where Keen, 47, was fatally stabbed with a large kitchen knife; a post-mortem cited a chest wound involving the right ventricle.
  • CCTV from Pennell’s home showed him taking an item with a black handle from a kitchen drawer shortly before the killing, supporting a finding of premeditation.
  • Mrs Justice Stacey imposed a restraining order protecting Phillips and paid tribute to Keen’s role in the local MMA community, noting the scale of public mourning.