Hospital Front

Family of Chicago Hospital Shooting Victim Files Suit Against Security Company, Hospital

The lawsuit argues that Mercy Hospital and SDI Security did not follow their own protocols by failing to issue alerts or initiating a lockdown of the building.

A security company and hospital in Chicago are facing a wrongful death lawsuit from the family of a woman killed in a 2018 shooting.

The 12-count suit accuses Mercy Hospital, SDI Security Inc and Trinity Health Inc of negligence that would have saved the life of Dayna Less, a pharmacy resident, who was killed when she stepped out of a hospital elevator on Nov. 19, 2018. The suit also names the estate of the shooter, who was killed during a gun battle with police.

Two others died during the shooting: emergency room doctor Tamara O’Neal, who was the ex-fiancee of the gunman, and Chicago Police Officer Samuel Jimenez, who was killed in the shootout shootout.

Less’ family claims that the hospital and the security company did not follow their own protocols while responding to the shooting. SDI and Mercy failed to issue a “Code Silver” alert for an active shooter that would have led to a lockdown of the building, The Chicago Sun-Times reported.

That alert would have warned Less and her colleagues about the threat, the lawsuit contends, and prevented the gunman from re-entering the hospital after he shot O’Neal in the parking lot.

In addition, the suit accuses hospital and security officials of not confronting the gunman between the time he arrived in the hospital lobby at 1:45 p.m. and when he confronted O’Neal in the parking lot at 3:12 p.m.

“Mercy and SDI literally watched this armed and dangerous man hunt down and kill Dr. O’Neal, then shoot at the police when they arrived, and then stop and reload his weapon. Yet they did nothing,” Matthew Piers, an attorney for the Less family, told the Sun-Times. “Amazingly, they continued to do nothing as [the gunman] walked back into the still unlocked hospital building.”

In response to the suit, Mercy Hospital officials extended their sympathy to the Less family but said they do not comment on pending litigation. SDI Security filed a contribution lawsuit last month arguing that the city of Chicago and the police departments had failed to confront the shooter or prevent him from re-entering the hospital. This makes them partially liable for any damages related to the tragedy, according to SDI.

The company denied any liability for injuries caused by the shooting but said the city should have to contribute to payment if a judgement is rendered against SDI, according to the Sun-Times.

About the Author

Haley Samsel is an Associate Content Editor for the Infrastructure Solutions Group at 1105 Media.

Featured

  • New Report Reveals Top Trends Transforming Access Controller Technology

    Mercury Security, a provider in access control hardware and open platform solutions, has published its Trends in Access Controllers Report, based on a survey of over 450 security professionals across North America and Europe. The findings highlight the controller’s vital role in a physical access control system (PACS), where the device not only enforces access policies but also connects with readers to verify user credentials—ranging from ID badges to biometrics and mobile identities. With 72% of respondents identifying the controller as a critical or important factor in PACS design, the report underscores how the choice of controller platform has become a strategic decision for today’s security leaders. Read Now

  • Overwhelming Majority of CISOs Anticipate Surge in Cyber Attacks Over the Next Three Years

    An overwhelming 98% of chief information security officers (CISOs) expect a surge in cyber attacks over the next three years as organizations face an increasingly complex and artificial intelligence (AI)-driven digital threat landscape. This is according to new research conducted among 300 CISOs, chief information officers (CIOs), and senior IT professionals by CSC1, the leading provider of enterprise-class domain and domain name system (DNS) security. Read Now

  • ASIS International Introduces New ANSI-Approved Investigations Standard

    • Guard Services
  • Cloud Security Alliance Brings AI-Assisted Auditing to Cloud Computing

    The Cloud Security Alliance (CSA), the world’s leading organization dedicated to defining standards, certifications, and best practices to help ensure a secure cloud computing environment, today introduced an innovative addition to its suite of Security, Trust, Assurance and Risk (STAR) Registry assessments with the launch of Valid-AI-ted, an AI-powered, automated validation system. The new tool provides an automated quality check of assurance information of STAR Level 1 self-assessments using state-of-the-art LLM technology. Read Now

  • Report: Nearly 1 in 5 Healthcare Leaders Say Cyberattacks Have Impacted Patient Care

    Omega Systems, a provider of managed IT and security services, today released new research that reveals the growing impact of cybersecurity challenges on leading healthcare organizations and patient safety. According to the 2025 Healthcare IT Landscape Report, 19% of healthcare leaders say a cyberattack has already disrupted patient care, and more than half (52%) believe a fatal cyber-related incident is inevitable within the next five years. Read Now

New Products

  • Mobile Safe Shield

    Mobile Safe Shield

    SafeWood Designs, Inc., a manufacturer of patented bullet resistant products, is excited to announce the launch of the Mobile Safe Shield. The Mobile Safe Shield is a moveable bullet resistant shield that provides protection in the event of an assailant and supplies cover in the event of an active shooter. With a heavy-duty steel frame, quality castor wheels, and bullet resistant core, the Mobile Safe Shield is a perfect addition to any guard station, security desks, courthouses, police stations, schools, office spaces and more. The Mobile Safe Shield is incredibly customizable. Bullet resistant materials are available in UL 752 Levels 1 through 8 and include glass, white board, tack board, veneer, and plastic laminate. Flexibility in bullet resistant materials allows for the Mobile Safe Shield to blend more with current interior décor for a seamless design aesthetic. Optional custom paint colors are also available for the steel frame.

  • HD2055 Modular Barricade

    Delta Scientific’s electric HD2055 modular shallow foundation barricade is tested to ASTM M50/P1 with negative penetration from the vehicle upon impact. With a shallow foundation of only 24 inches, the HD2055 can be installed without worrying about buried power lines and other below grade obstructions. The modular make-up of the barrier also allows you to cover wider roadways by adding additional modules to the system. The HD2055 boasts an Emergency Fast Operation of 1.5 seconds giving the guard ample time to deploy under a high threat situation.

  • ResponderLink

    ResponderLink

    Shooter Detection Systems (SDS), an Alarm.com company and a global leader in gunshot detection solutions, has introduced ResponderLink, a groundbreaking new 911 notification service for gunshot events. ResponderLink completes the circle from detection to 911 notification to first responder awareness, giving law enforcement enhanced situational intelligence they urgently need to save lives. Integrating SDS’s proven gunshot detection system with Noonlight’s SendPolice platform, ResponderLink is the first solution to automatically deliver real-time gunshot detection data to 911 call centers and first responders. When shots are detected, the 911 dispatching center, also known as the Public Safety Answering Point or PSAP, is contacted based on the gunfire location, enabling faster initiation of life-saving emergency protocols.