Sergio Retamar Marquez killing: Karl Addo admits manslaughter Published duration 2 December 2013

image caption Sergio Marquez shared a flat with Karl Addo

A man has admitted killing a Spanish student who was stabbed and decapitated at a flat in Bournemouth.

The body of Sergio Retamar Marquez, 23, was found at a property in Lansdowne Road in July 2012.

Karl Addo, 30, denied murder but pleaded guilty to manslaughter on the grounds of diminished responsibility.

A post-mortem examination revealed Mr Marquez died from multiple stab wounds to the chest and was decapitated after his death.

Prosecuting, Nigel Pascoe QC said Addo was in the "grip of paranoid schizophrenia" at the time of the killing.

He described the attack as "prolonged and horrific".

The court heard Addo shared the flat with Mr Marquez and two other flatmates.

The landlord had evicted Addo and he was supposed to leave on 17 July.

image caption Post-mortem tests found Sergio Retamar Marquez was repeatedly stabbed in the chest

Jurors were told a neighbour heard an argument that afternoon with the words "Please Karl, please Karl", before hearing the sound of furniture being dragged and laughter followed by silence.

When Mr Marquez's body was found, his head and stomach had been mutilated, the court heard.

Paying tribute to her son, Maria Carmen Marquez Torres, said he had "such a beautiful life".

"Sergio had everything, he was handsome, happy, kind, healthy, responsible, fun, and polite. He is a person that is impossible to replace."