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The Congolese refugee had applied for asylum in Berlin, Germany, where he is alleged to have carried out the brutal killing.

The man – identified by authorities as Yve M – is accused of stabbing his girlfriend 30 times in the stomach and chest before beheading the corpse.

Prosecutors claim he then cut off her little finger from her right hand and her left arm before decorating her body.

(Image: GETTY)

Cops attended the apartment after neighbours claimed there was a rancid stench coming from the property.

Police found the victim – named as Tunay G – after her body had already begun to decay, reports Bild.

Her body had also been decorated with stones, string and feathers in what investigators believe was a “ritual killing”.

(Image: GETTY) (Image: GOOGLE)

Authorities said the victim had died of blood loss and no murder weapon has been recovered.

The killing happened sometime on May 15 or 16 last year, but the body was not discovered until June 10.

The 39-year-old migrant was arrested on June 11 for the killing of his girlfriend, also 39.

Last year, a teenage Afghan asylum seeker admitted killing Maria Ladenburger – the daughter of an EU official.

Yve M appeared in court on Friday in connection with the killing in Berlin.

Prosecutors are calling for the accused to be committed to a psychiatric ward as they believe he is suffering from paranoid schizophrenia and “religious delusions”.

The couple met while living in temporary accommodation and had moved in a month before the attack.

Migrant attacks continue to rock Germany after Angela Merkel took in more than a million refugees from the Middle East.

Last Friday a foreigner allegedly raped a 60-year-old woman in harrowing driveway sex attack.