Officers say a 45-year-old was booked on suspicion of murder and burglary following a death inside a westside San Francisco home.
SAN FRANCISCO — A reported residential burglary on the 200 block of Granada Avenue turned fatal Sunday afternoon on the city’s west side, and police later arrested a 45-year-old San Francisco man they say matched the description of a person of interest. The victim, described by authorities as an adult man, was pronounced dead at the scene.
Police say the case began at about 3:04 p.m. Sunday when officers were dispatched to a burglary report in the Taraval District, which spans several westside neighborhoods near Ocean Avenue and 19th Avenue. Inside the home, officers found a gravely injured man and began life-saving measures until paramedics arrived. The person did not survive. By late Sunday and into Monday, investigators from the homicide detail had taken over the case, and a suspect, identified as Cassidy Wyatt Allen of San Francisco, was booked into county jail on suspicion of murder and burglary. The department said the investigation is active, and many key details remain under review.
Responding officers and medics treated the victim at the Granada Avenue home shortly after they arrived. Police have not released the man’s name pending next-of-kin notification and did not specify the type of injuries found. After the initial call, officers conducted a well-being check near 19th Avenue and Sloat Boulevard, a major intersection just west of the scene, where they encountered Allen, who fit the description circulated to patrol units. He was detained without incident, taken in for questioning, and later booked into San Francisco County Jail. In a brief statement, the department said, “Although an arrest has been made, this remains an open and active investigation,” adding that further updates would be provided as investigators confirm facts and collect evidence.
Police described the case as a burglary that became a homicide after officers entered the residence and found the wounded man. The address sits on Granada Avenue near Ocean Avenue in the Ingleside Police District area served by Taraval Station, a residential stretch of single-family homes. Officers performed CPR and other aid before paramedics arrived, but the victim was declared dead at the house. Authorities have not said whether the victim lived at the property, whether there was any prior connection between the victim and the suspect, or what prompted the break-in. Investigators have also not publicly outlined what, if anything, was taken from the home, or whether any weapons were recovered nearby when Allen was detained close to 19th Avenue and Sloat Boulevard.
Records show Allen, 45, was booked on suspicion of violating Penal Code 187, murder, and Penal Code 459, burglary, following his detention. Police did not immediately disclose the booking time, bail status, or whether he had an attorney. Officials also did not release any surveillance images or a detailed suspect description beyond Allen’s name and age. The department has not announced any additional arrests or suspects. While early reports from the scene noted attempts at resuscitation, authorities have not provided a timeline of the victim’s exact medical care or the specific nature of the fatal injuries. The Office of the Chief Medical Examiner is handling the identification and cause of death determinations.
Neighbors on Granada Avenue described the block as usually quiet, with steady traffic to and from nearby Ocean Avenue and the commercial corridor along 19th Avenue. Several residents said the police presence Sunday afternoon was heavy, with marked cruisers and yellow tape blocking access to the immediate area as investigators moved in and out of the home. One resident, who declined to give a full name, said seeing officers perform CPR on the sidewalk before medics arrived was “jarring” and that people on the block were told to stay behind the tape as the crime scene was established. Police did not confirm how long the scene remained secured, but activity continued into the evening as the homicide detail canvassed the neighborhood.
The Taraval District has seen spurts of property crimes in recent years, though homicides on the residential blocks near Merced Manor and Ingleside Terrace are less common. Granada Avenue runs south of Ocean Avenue and east of 19th Avenue, an area with small businesses, schools, and Muni lines connecting to downtown and the Sunset. The westside corridor around 19th Avenue and Sloat Boulevard is a busy thoroughfare linking Highway 1 and the Lake Merced area. Sunday’s death is among the latest violent incidents drawing attention to burglaries that escalate into assaults inside homes, though police emphasized that each case is distinct and information is still being gathered in this investigation.
Police said Allen was arrested without incident and transported for booking after investigators found probable cause to hold him on suspicion of murder and burglary. The District Attorney’s Office will review the case file and decide on formal charges. As of Tuesday, prosecutors had not announced a filing decision. If charges are filed, Allen’s first court appearance would be scheduled at San Francisco Superior Court. Police said additional information, including the victim’s identity and cause of death, will be released by the Medical Examiner once notifications are made. Detectives urged anyone with information, surveillance footage from Granada Avenue, or eyewitness accounts from the 19th Avenue and Sloat Boulevard area to contact investigators as they piece together a timeline of events.
On Granada Avenue Monday, a few neighbors stopped to talk quietly near the taped-off area while city vehicles came and went. A passerby walking a dog paused to watch investigators photographing a porch light and a side gate. “It’s scary to think something like this happened in the middle of the day,” said a resident who gave only a first name, adding that they had not seen unusual activity on the block before sirens arrived. Police did not say whether they believe the burglary was targeted or random, and they have not released details about how the suspect entered the home. As rain clouds moved in from the Pacific, a light breeze rattled tree limbs over the narrow street while officers packed equipment into their trunks.
As of late Tuesday, police still had not released the victim’s name or a suspected motive. Investigators were expected to continue canvassing the neighborhood for video and to interview additional witnesses through the week. The next official update is likely to come when prosecutors decide on charges or when the Medical Examiner confirms cause and manner of death. Police said they would share more details when they are verified.
Author note: Last updated November 25, 2025.