Shocking! Russian chopped off his girlfriend's head and had sex with it

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London: A Russian rock singer has been declared insane after it was learnt that he decapitated his girlfriend and had sex with her head.

According to a report on MailOnline, the “psycho killer” was having sex with her head while wearing one of her dresses.

Aleksandr U., 23, murdered his girlfriend, 22-year-old Viktoria V., in Russia's Voronezh city in July last year, the report said.

His punk band threw him out when they discovered his fetish for women's clothing.

Meanwhile, police have discovered the decapitated body and her head.

It is believed he murdered his girlfriend when she discovered his fetish.

Aleksandr was declared mentally ill and has been detained in a psychiatric institute.