Houston police are investigating the death of 13-year-old Riley DeArmas, who was stabbed during a large fight at a northwest Houston apartment complex, as detectives weigh a self-defense claim by a 10-year-old boy who said he delivered the fatal wound.
The stabbing happened about 8 p.m. Wed., Feb. 4, outside an apartment in the 8000 block of Grow Lane near Tidwell Road and U.S. 290, police said. Officers described a disturbance involving roughly 20 to 30 people. DeArmas was taken to a hospital and later pronounced dead. The boy was detained, questioned, and then released while homicide investigators gather evidence and confer with prosecutors on whether any charges will be filed.
Houston Police Lt. Larry Crowson told reporters after the killing that investigators were sorting through conflicting accounts from a chaotic scene. Crowson said the boy told officers he stabbed DeArmas while trying to protect himself during the fight. Police said they were also investigating why so many people were involved and whether the apartment-complex brawl was connected to an earlier dispute among youths at a school that day. Authorities have not released the boy’s name because of his age, and police have not said what kind of knife was used.
According to police, the violence unfolded quickly. Officers were called to the complex after a report of a stabbing and a large fight outside an apartment. When they arrived, officers found a juvenile girl with an apparent stab wound. Houston Fire Department paramedics transported her to a hospital, where she died, police said. Investigators detained the 10-year-old boy at the scene and interviewed him about what happened. Police later released him pending further investigation, and Crowson said homicide detectives were in contact with the district attorney’s office to determine how to proceed.
Police have described the fight as an altercation between two groups of individuals. Crowson said the boy’s account was that the 13-year-old girl was among a group that came to an apartment and began assaulting people inside or near the unit. Family members and friends of DeArmas have disputed that framing in comments reported by local outlets, saying she was the one who was attacked. Detectives have not publicly resolved those competing claims, and investigators have not said whether DeArmas knew the boy or whether they had prior contact. Police have also not said whether any adults were injured or whether weapons other than a knife were involved.
What makes the case unusual is the age of the boy at the center of the investigation. Texas law sets 10 as the minimum age for criminal responsibility, meaning a child that young can be referred into the juvenile system in some circumstances. Crowson noted that age threshold while stressing that the decision on charges would be made by prosecutors after detectives finish interviews and review evidence. Police have not said whether the boy has an attorney, whether he made statements in the presence of a parent, or whether any court paperwork has been filed. The boy’s release does not end the investigation, authorities said, and detectives said they were still working to identify additional witnesses.
DeArmas’ death rippled beyond the apartment complex. The Harris County Institute of Forensic Sciences identified her, and her school district confirmed she was a student at Dean Middle School in the Cypress-Fairbanks Independent School District. In a letter to families, the school’s principal, Michael George, said staff members were grieving the death of a student and that counselors and support workers were available on campus. The district did not publicly address details of the fight, but officials acknowledged the impact on classmates and teachers who returned to school after learning that a student had died.
Investigators are now working through the kinds of questions that often decide whether a self-defense claim holds up. Police will need to determine how the fight started, who took part, and what DeArmas was doing at the moment she was stabbed. They will also look for evidence of an imminent threat to the boy, the level of force used, and whether there were opportunities to retreat or de-escalate, based on the facts and the child’s ability to understand danger. Authorities have not described any injuries to the boy, and they have not released video from the scene. Police said they were looking for surveillance footage and additional witnesses who may have recorded the fight on phones.
The setting also complicates the investigation. Apartment-complex fights can draw neighbors from multiple buildings into the same outdoor space, and accounts can differ sharply depending on where people were standing. Police said the disturbance involved as many as 30 people, which can make it difficult to separate primary participants from bystanders. Detectives often rely on a mix of witness interviews, emergency calls, medical findings, and video to reconstruct a timeline. Authorities have not said whether any of those sources are missing or incomplete in this case, but they have emphasized that the inquiry is active and that the boy’s statement is only one piece of the record.
For prosecutors, the next steps are procedural as well as factual. If a case is referred to juvenile authorities, decisions can include whether to file a petition, what level of supervision is appropriate, and whether detention is warranted. Experts who work in juvenile justice have noted in public discussions of the case that placing a 10-year-old in a detention setting can carry risks because facilities often hold older teens. Law enforcement officials have not announced any plan to seek detention, and they have not described any protective measures for the boy or for witnesses. Police also have not said whether any adults could face charges related to the brawl, such as assault allegations, disorderly conduct, or other offenses connected to the fight itself.
In the neighborhood around Grow Lane, the stabbing has left residents with questions about supervision and safety. Police have said the violence stemmed from a fight between groups, but they have not offered a clear explanation of why the conflict erupted or how it escalated to a stabbing. The location sits in a busy corridor of northwest Houston near a major highway, and the area includes multiple apartment communities where children often gather outdoors. Officers have not described whether the fight began at a playground, a parking lot, or near a specific unit, only that it occurred outside an apartment. Investigators have not released the address of the unit involved.
DeArmas’ family and friends have focused on her loss as detectives continue their work. Public accounts have described her as a middle school student, and the school district’s message framed her death as a blow to classmates who may have known her for years. Police have not released details about funeral arrangements, and they have not said whether relatives have met with investigators about the case. As with many juvenile-involved investigations, officials have been cautious about releasing information that could identify the boy or other children who were present.
As of Mon., Feb. 9, no charges had been publicly announced against the boy, and police said the investigation remained open. Detectives said they were still interviewing witnesses, seeking video, and preparing a file for prosecutors to review. The next milestone is expected to be a charging decision or a public update from investigators once the district attorney’s office reviews the evidence and determines whether the case will proceed in juvenile court.
Author note: Last updated Feb. 9, 2026.