A family member discovered the headless bodies of city district judge Vladimir Trofimov, 58; his wife, Irina, 59; their son, Sergei, 30; and his girlfriend, Marina Zoueva, 29, and called police Saturday, the BBC reported Monday.
"The murder took place in the morning, four bodies are decapitated," a police statement said Saturday, adding that the heads of the four victims were missing.
"We do not exclude Trofimov's professional activity as a motive which led to the crime. But we are also looking into other possible motives," Kharkov District police chief Viktor Kozitsky said.
The slayings could have been the result of a burglary; Trofimov had extensive coin, World War II medal and fine china collections, some pieces of which were missing, Russian broadcaster RT reported.
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