A man died from a stab wound after police found him in his Brooklyn apartment on Tuesday.
Police responded to a 911 call from the Prospect-Lefferts Gardens apartment at around 2:45 p.m. where they discovered Alexis Martinez, 18, with a fatal stab wound to his chest.
Emergency workers took Martinez to Kings County Hospital, where doctors pronounced him dead soon after.
DNAinfo reported on Tuesday that Martinez lived in the first-floor apartment with his father and his own toddler son.
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NYPD confirmed on Wednesday morning that they questioned the mother of Martinez's son, who was in the apartment when cops arrived.
Police said she was the one who made the call to 911. She released overnight.
There are no other suspects at this time and the investigation is considered ongoing, NYPD said.
Follow Chester Jesus Soria on Twitter@chestersoria