The Dallas Police Department held a press conference on Tuesday, March 17, 2026, to provide a startling update on the fatal shooting of a longtime security guard for Representative Jasmine Crockett.
Investigators revealed that the man, who was killed during a standoff at Children’s Medical Center last week, had been living under a stolen identity and was a wanted fugitive with a significant criminal history.
The deceased, identified by police as Diamond Nasir Robinson, had spent years successfully posing as a legitimate security professional and federal agent using the alias "Mike King."
Robinson’s deception was so thorough that he even established a private security business, "Off Duty Police Services," which was registered with the Texas Secretary of State.
This allowed him to recruit actual off-duty Dallas police officers for security gigs through a verified professional app.
The standoff began after Dallas police attempted to serve a warrant to Robinson for a 2017 forged check charge and a parole violation. Dashcam footage showed Robinson fleeing a traffic stop before being located hours later in a parking garage at Children's Medical Center.
After officers deployed tear gas to force him from his vehicle, Robinson exited and pointed a stolen handgun at police. Three officers fired their weapons, killing him at the scene.
Representative Crockett expressed shock at the revelations, stating that her team followed "standard protocols" while hiring the man they knew as Mike King.
She noted that he _"somehow circumvented the vetting process" _and that there was _"never any reason to suspect that he wasn’t who he held himself out to be." _
Robinson’s true identity was only uncovered after an officer recognized his vehicle in a police bulletin regarding a stolen federal license plate.
Robinson's criminal record, which included prison time for auto theft, would have legally barred him from a career in law enforcement or licensed security.
Police Chief Eddie Garcia noted that the intelligence unit had been tracking Robinson for nearly two weeks before the fatal encounter, as they worked to piece together his elaborate double life.
The Dallas Police Department is continuing to investigate how Robinson was able to maintain his credentials and business registration for so many years without detection.
"He’s very good at hiding his true identity," a police spokesperson remarked, highlighting the sophisticated nature of the impersonation that spanned several years and reached the highest levels of local political security.