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

  • 2025 Security LeadHER Conference Program Announced

    ASIS International and the Security Industry Association (SIA) – the leading membership associations for the security industry – have announced details for the 2025 Security LeadHER conference, a special event dedicated to advancing, connecting and empowering women in the security profession. The third annual Security LeadHER conference will be held Monday, June 9 – Tuesday, June 10, 2025, at the Detroit Marriott Renaissance Center in Detroit, Michigan. This carefully crafted program represents a comprehensive professional development opportunity for women in security this year. To view the full lineup at this year’s event, please visit securityleadher.org. Read Now

    • Industry Events
  • Report: 82 Percent of Phishing Emails Used AI

    KnowBe4, the world-renowned cybersecurity platform that comprehensively addresses human risk management, today launched its Phishing Threat Trend Report, detailing key trends, new data, and threat intelligence insights surrounding phishing threats targeting organizations at the start of 2025. Read Now

  • NRF Supports Federal Bill to Thwart Retail Crime

    The National Retail Federation recently announced its support for the Combating Organized Retail Crime Act of 2025. The act was introduced by Chairman Chuck Grassley, R-Iowa, Senator Catherine Cortez Masto, D-Nev., and Representative Dave Joyce, R-Ohio. Read Now

  • ISC West 2025 Brings Almost 29,000 Industry Professionals to Las Vegas

    ISC West 2025, organized by RX and in collaboration with the Security Industry Association, concluded at the Venetian Expo in Las Vegas last week. The nation’s leading comprehensive and converged security event attracted nearly 29,000 industry professionals and left a lasting impression on the global security community. Over five action-packed days, ISC West welcomed more than 19,000 attendees and featured 750 exhibiting brands. Read Now

    • Industry Events
    • ISC West
  • Tradeshow Work Can Be Fun

    While at ISC West last week, I ran into numerous friends and associates all of which was a pleasant experience. The first question always seemed to be, “How many does this make for you?” Read Now

    • Industry Events
    • ISC West

New Products

  • PE80 Series

    PE80 Series by SARGENT / ED4000/PED5000 Series by Corbin Russwin

    ASSA ABLOY, a global leader in access solutions, has announced the launch of two next generation exit devices from long-standing leaders in the premium exit device market: the PE80 Series by SARGENT and the PED4000/PED5000 Series by Corbin Russwin. These new exit devices boast industry-first features that are specifically designed to provide enhanced safety, security and convenience, setting new standards for exit solutions. The SARGENT PE80 and Corbin Russwin PED4000/PED5000 Series exit devices are engineered to meet the ever-evolving needs of modern buildings. Featuring the high strength, security and durability that ASSA ABLOY is known for, the new exit devices deliver several innovative, industry-first features in addition to elegant design finishes for every opening.

  • Connect ONE’s powerful cloud-hosted management platform provides the means to tailor lockdowns and emergency mass notifications throughout a facility – while simultaneously alerting occupants to hazards or next steps, like evacuation.

    Connect ONE®

    Connect ONE’s powerful cloud-hosted management platform provides the means to tailor lockdowns and emergency mass notifications throughout a facility – while simultaneously alerting occupants to hazards or next steps, like evacuation.

  • Camden CM-221 Series Switches

    Camden CM-221 Series Switches

    Camden Door Controls is pleased to announce that, in response to soaring customer demand, it has expanded its range of ValueWave™ no-touch switches to include a narrow (slimline) version with manual override. This override button is designed to provide additional assurance that the request to exit switch will open a door, even if the no-touch sensor fails to operate. This new slimline switch also features a heavy gauge stainless steel faceplate, a red/green illuminated light ring, and is IP65 rated, making it ideal for indoor or outdoor use as part of an automatic door or access control system. ValueWave™ no-touch switches are designed for easy installation and trouble-free service in high traffic applications. In addition to this narrow version, the CM-221 & CM-222 Series switches are available in a range of other models with single and double gang heavy-gauge stainless steel faceplates and include illuminated light rings.