A shocking crime has unfolded in Colorado as a 19-year-old man faces serious charges for the gruesome murder and dismemberment of his girlfriend. Luis Antonio Mendez Hernandez allegedly killed Griselda Amarilis Lopez-Racancoj, the mother of his child, and concealed her remains beneath their bed. He reportedly attempted to mislead authorities by claiming she had taken her own life.

Hernandez has been charged with multiple counts including first-degree murder after deliberation, first-degree murder with extreme indifference, and second-degree murder. Additionally, he faces a charge of tampering with a deceased human body. These charges were formally announced by authorities following his arrest last month.

The grim discovery was made after Frisco Police Department officers responded to a call about a “medical emergency” at a residence shortly after midnight on December 29, 2025. Upon arrival, they found the lifeless body of Lopez-Racancoj, prompting a deeper investigation due to the unsettling scene they encountered.

Subsequent to the initial findings, a search warrant was issued, leading to Hernandez’s arrest the same day. The details of the case were initially under wraps until District Judge Reed W. Owens decided to unseal the probable cause affidavit on Wednesday, shedding light on the tragic events.

Due to the “circumstances on the scene,” police obtained a search warrant and took Hernandez into custody later that day. The probable cause affidavit in the case had been sealed until District Judge Reed W. Owens unsealed the document on Wednesday.

A copy of the affidavit, obtained by the Summit Daily, provided the harrowing details that led to Hernandez’s arrest.

According to the document, when officers and medics arrived at the home, two female residents said they saw a person under the bed in the room shared by Hernandez and Lopez-Racancoj. A search of the room revealed the victim’s dismembered body in a white trash bag that had been “stuffed” under the bed.

One of the residents reportedly told police that Lopez-Racancoj had broken up with Hernandez on the night of Dec. 27, 2025, but noted that she had not seen the 20-year-old since the couple had argued that evening. When she saw Hernandez on the morning of Dec. 29, the resident said he had visible scratch marks on his neck and chest.

Investigators said that when searching the home, they recovered a 6-inch steak knife in the closet of Hernandez’s room that was covered in blood as well as pillows with blood patterns that were consistent with being “held to a person’s face.”

Another roommate reportedly told police Hernandez sent them “strange” text messages the night of Dec. 28, 2025, in which Hernandez suddenly claimed that Lopez-Racancoj was suicidal. When they confronted Hernandez about the whereabouts of Lopez-Racancoj, he allegedly refused to say.

In a post-Miranda interview with detectives, Hernandez said on Dec. 27, 2025, he got home from work at about 11 p.m., showered, and got into bed with an already-sleeping Lopez-Racancoj. He claimed he awoke at about 3 a.m. to feed their crying child a bottle then got back in bed and snuggled next to Lopez-Racancoj, only to find that she was cold to the touch and “obviously deceased.”

Hernandez reportedly said he did not call 911 due to “shock” and fear of being blamed. He went on to indicate that Lopez-Racancoj was being harassed by another man and suggested that she may have killed herself.

Hernandez refused to discuss any possible injuries Lopez-Racancoj may have suffered and claimed the scratches on his neck and chest were self-inflicted, the Summit Daily reported.

Instead of calling authorities, Hernandez said he wrapped Lopez-Racancoj’s body in a blanket and hid her under the bed before performing Google searches for how to dispose of her body.

Hernandez is currently being held in Summit County Jail on $5 million bond. It was not immediately clear when he was scheduled to next appear in court.