Smith, 35, shot himself in the head on the
George Washington Memorial Parkway on January 15, 2021, the day he was supposed to return to duty. Smith's was the second of four police suicides in the immediate aftermath of the storming of the Capitol, the others being the U.S. Capitol Police officer
Howard Liebengood, Gunther Hashida, and Kyle DeFreytag. In addition, one Capitol Police officer,
Brian Sicknick, died of a stroke as a consequence of the riot. Dr. Jonathan Arden, the former
Chief Medical Examiner of the
District of Columbia was hired by Smith's widow as part of her lawsuit to have her husband's suicide ruled "in the line of duty". His report stated that the "acute, precipitating event that caused the death of Smith was his occupational exposure to the traumatic events he suffered on January 6, 2021". Submitting this report as evidence, on August 13, Smith's widow sued two of his alleged assailants, claiming they caused a
traumatic brain injury with a crowbar or a heavy walking stick, leading to his death. According to media reports, Smith's alleged attackers, named in the federal lawsuit, were identified by an
internet vigilante group that analyzed publicly available videos from the Capitol attack. On October 17, 2021, NBC News reported that the
Virginia congressional delegation had written to the Washington mayor noting that Smith's death was causally related to the Capitol Riot, and urged her to grant line of duty death benefits to Smith's widow Erin Smith. The D.C. Police and Firefighters' Retirement and Relief Board Order stated: ""Smith sustained a personal injury on January 6, 2021, while performing his duties and that his injury was the sole and direct cause of his death." According to Smith's attorney
David P. Weber, "This is the first time where someone who has suffered a brain injury, and an emotional injury, has been acknowledged as a line-of-duty death. This will impact widows, widowers, children and parents of everyday heroes who have suffered these injuries in the line of duty." On June 23, 2025, 69-year-old
chiropractor David Walls-Kaufman was ordered to pay $380,000 in
punitive damages and $60,000 in compensatory
damages to Erin Smith for assaulting her husband during the Capitol riot. Walls-Kaufman had served a 60-day prison sentence after pleading guilty to a
misdemeanor in 2023. ==Honors==