CHICAGO (STMW) — An 18-year-old man was charged with first-degree murder Thursday after police found a decapitated man early Christmas morning in the Hermosa neighborhood on the Northwest Side.

Officers responding to a homicide call found the decapitated 41-year-old man about 2 a.m. Wednesday inside a basement apartment in the 2500 block of North Kildare Avenue, police said.

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Police said they found a knife at the scene.

An 18-year-old man, later identified as Alexis Valdez, was standing outside the building and taken in to custody that evening, police said. His relationship with the decapitated man was not immediately known.

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Valdez, of the 5000 block of West Drummond Place, faces one count of first-degree murder for allegedly murdering and dismembering the man, police said. He will appear for a bond hearing Friday.

The man was dead at the scene, according to the Cook County Medical Examiner’s office. He was identified as 41-year-old Silvestre Diaz-Hernandez and lived at the apartment.

Area North detectives are conducting a homicide investigation.

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(Source: Sun-Times Media Wire © Chicago Sun-Times 2013. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)