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Story summary
- Zack Coughlan (23) pleaded guilty to murdering housemate Jamie Collins (21).
- The killing occurred on 8 April in an alleyway near the garden of their Filton home.
- Coughlan stabbed Collins more than 30 times during a masked ambush.
- He left Collins’s body outside for eight hours before calling police.
- At Bristol Crown Court, Coughlan said he feared Collins would kill him.