Full Breakdown
Teen Charged with Murder of Homeless Woman in Las Vegas
5/13/2026, 11:10:14 PM
Incident Overview
On April 21, 2026, the body of 61-year-old Marceline Biasini was discovered lying on a sidewalk outside a business in Las Vegas, Nevada. The Clark County coroner’s office ruled the death a homicide caused by blunt-head trauma. Las Vegas Metropolitan Police Department (LVMPD) investigators later identified 17-year-old Dennis Geiggar as a suspect and, on May 5, arrested him on a felony count of open murder.
Background on Victim and Suspect
Biasini was known to sleep in the area where she was found. Geiggar, a student formerly enrolled at Valley High School, had a documented pattern of anger-related incidents, including an alleged attempt to start a fire on campus in January 2026 and multiple episodes of punching walls and trash cans. Following the fire incident, he was expelled and subsequently attended school online while participating in anger-management classes.
Timeline of Key Developments
- April 21, 2026 (?8 a.m.) – Biasini’s body discovered; coroner later classifies death as homicide.
- April 21, 2026 (night) – Surveillance video captures a figure in a red hooded sweatshirt approaching the victim’s location, followed by a scream and approximately 61 loud thuds.
- May 5, 2026 – LVMPD arrests Geiggar; he is charged with open murder.
- May 5 – present – Forensic analysis of Geiggar’s Vans shoes shows presumptive blood; DNA comparison pending.
Evidence and Forensic Findings
Investigators recovered bloody footwear impressions at the scene. Tests on Geiggar’s Vans shoes returned presumptive positive results for blood, though DNA matching has not been completed. Surveillance footage from a nearby 7-Eleven recorded the suspect’s approach but did not capture him inside the store. The suspect’s physical description matches that of the individual seen on video.
Official Law Enforcement and Medical Findings
LVMPD statements confirm that the suspect’s description aligns with the video-captured individual and that the victim suffered “battered” injuries during the night. The Clark County coroner’s office determined the cause of death to be blunt-head trauma, classifying the case as a homicide.
Conflicting Reports & Gaps
- DNA analysis of the blood on the shoes remains incomplete, leaving the forensic link to the suspect unverified.
- Video from the 7-Eleven does not show Geiggar inside the store at the time of the incident, creating a gap in visual confirmation of his presence.
- Geiggar has denied the accusations, and it is unclear whether he has retained legal counsel to comment further.
Verbatim Quotes
- “The precise location of the crime scene was obstructed from surveillance cameras, but video surveillance with audio … captured the suspect approaching Marceline’s location and, seconds later, a scream is heard followed by approximately 61 loud thuds,” — *Las Vegas Review-Journal*
- “Detectives determined the woman had been "battered at some point during the night," according to a statement provided to Fox News Digital.” — *Las Vegas Review-Journal*
- “Police also said Geiggar had "numerous incidents where his anger had resulted in his punching walls and trash cans" and had been participating in anger management classes, according to the outlet.” — *Las Vegas Review-Journal*
- “Tests on Geiggar’s Vans shoes came back presumptively positive for blood, though DNA comparison has not yet been completed, the outlet said.” — *Las Vegas Review-Journal*
- “Geiggar has denied the accusations, according to documents cited by the Review-Journal.” — *Las Vegas Review-Journal*
What’s Next
The investigation continues pending DNA results and further forensic analysis. Prosecutors have indicated that the open-murder charge will be pursued, and the case remains pending as Geiggar remains in custody.
