KARL Addo is due to be sentenced for the brutal murder of flatmate Sergio Marquez at Bournemouth Crown Court this morning.

Paranoid schizophrenic Addo pleaded guilty to manslaughter on the grounds of diminished responsibility during a hearing on Monday.

Marquez, 23, was stabbed to death before Addo cut off his head and mutilated his stomach at the Lansdowne flat on July 17 last year.