DALLAS, Texas – A longtime security guard for U.S. Rep. Jasmine Crockett died after Dallas Police SWAT officers shot him during a tense standoff in a hospital parking garage. The man known to Crockett and her staff as Mike King was actually Diamon-Mazairre Robinson, a 39-year-old convicted felon with a criminal record that stretches back more than 15 years.
People close to the case say he used the name Mike King to hide his real identity. Investigators linked Robinson to repeated theft arrests, active warrants, and a federal case tied to impersonating a law enforcement officer. Now, the shooting has put a harsh spotlight on how someone with that background ended up protecting a sitting member of Congress.
The incident happened late Wednesday night, March 12, 2026, outside the Children’s Medical Center in Dallas. Body camera video released by the Dallas Police Department shows an hour-long standoff that ended with officers opening fire. As a result, the case has triggered serious concern about background checks for congressional security contractors.
The Deadly Standoff: Police Chase, Barricade, and SWAT Shooting
Dallas police first spotted Robinson on March 11 while he was driving a silver Dodge Charger. Officers tried to stop him because a stolen government license plate on the car was tied to a Black GMC Yukon he had also been using. Instead of pulling over, Robinson led officers on a short chase and then ran into the parking garage at Children’s Medical Center.
Once there, he barricaded himself inside a vehicle with an unidentified woman. Police said the woman followed commands and got out safely. After that, officers spent more than an hour trying to talk Robinson into surrendering.
When negotiations failed, SWAT officers moved in. They used tear gas to push him out of the car. Bodycam footage shows Robinson stepping out with a handgun in his right hand and aiming it at officers. Three SWAT officers then fired their rifles, hitting him several times. He died at the scene.
Later, police found 11 guns at his home and in his vehicles, including at least one stolen firearm. Investigators also recovered two stolen vehicles and signs of fraud-related activity. On top of that, Robinson had three active warrants, two for theft and one tied to a 2017 parole violation.
The standoff lasted for hours and drew a heavy police response into a busy medical area. Dallas police said Robinson was already the subject of a manhunt connected to impersonation charges.
The Real Identity Behind Mike King
For years, Robinson used the name Mike King. He presented himself as an experienced security professional with law enforcement ties. In fact, some coworkers and even some officers believed he worked as a detective with the U.S. Capitol Police. That claim was false.
He drove what authorities described as a replica undercover police vehicle. He also used stolen license plates taken from cars parked outside a military recruiting office. Sources told CBS News Texas and FOX 4 that he built a false identity in an effort to reinvent himself after years of legal trouble.
Robinson also ran a company called Off Duty Police Services. Through that business, he hired real North Texas police officers for off-duty security jobs. He even promoted high-paying work tied to the upcoming FIFA World Cup in the Dallas-Fort Worth area, with rates listed at $90 an hour.
Even with his record, Robinson worked closely with Crockett’s team. He handled security at downtown Dallas hotels, public events, and during her recent U.S. Senate campaign. Photos from public appearances show him standing close to the congresswoman, often only a few feet away.
Records reviewed by several news outlets show that a person using the name Mike King was paid by Crockett’s office for security work. One payment totaled $340 as recently as 2025.
A Long Criminal Record: Arrests, Warrants, and False Identities
Court records tied to Robinson’s real name, Diamon-Mazairre Robinson, show a series of arrests going back to at least 2009 and 2010. Those records include repeated theft charges in Dallas, Duncanville, Irving, and Dallas County.
Here are some of the main details from his record:
- 2009 to 2012: At least seven theft arrests, including both misdemeanor and felony cases.
- Through 2017: More charges that led to guilty pleas, fines of up to $2,500, probation terms ranging from one to five years, with one case bringing 10 years of probation, plus a parole violation warrant.
- Recent warrants: Two active theft warrants and one warrant for the 2017 parole violation.
- No listed violent crimes: As Crockett later said, an early review of Dallas County records did not show violent offenses.
A former lawyer who represented Robinson in a fraud case described him as “very smooth, very friendly” and the kind of person who seemed trustworthy at first meeting. The attorney said he was shocked when he learned the man’s true identity through news reports.
Robinson also used more than one alias to cover his past. Investigators say he created fake businesses with false identifying details so he could hire legitimate police officers. Federal authorities were already looking into claims that he impersonated a federal agent and ran under the name of a fake agency called “Special Dignitary Police.”
How He Got Close to Jasmine Crockett
Jasmine Crockett, the Democratic congresswoman for Texas’s 30th District, is widely known for speaking out on civil rights and criminal justice reform. Before entering politics, she worked as a public defender.
Robinson joined her security circle years ago. He coordinated with local law enforcement and appeared to have strong ties in the community. Crockett’s team used him as a vendor approved through House protocols for added district security.
To the congresswoman and her staff, he was Mike King. They say they had no reason to think he was living under a false identity until after the shooting. He worked security during her time in Congress and while she campaigned for the Senate, often appearing beside her at public events.
Now, attention has turned to the screening process. The U.S. House has rules for hiring security vendors, including guidance to work with district security services and the Sergeant at Arms. Still, those checks are not always required in every form or strong enough to catch every issue. Robinson appears to have slipped through anyway, despite his record and an ongoing federal investigation.
His company also misled local agencies. Real officers accepted work through Off Duty Police Services without knowing who actually ran it.
Jasmine Crockett’s Response and Public Statement
Congresswoman Crockett spoke publicly on Monday in a written statement posted to social media. She said she was shocked and saddened by what had come to light.
Here are key parts of her statement:
- “We are praying for the friends and family of the man that we knew as Mike King. There was never any reason to suspect that he wasn’t who he held himself out to be. He never endangered our team, worked diligently, coordinated with local law enforcement, and maintained positive relationships throughout the community.”
- “Mike always conducted himself respectfully and with care for those around him.”
- “As a former public defender, the Congressman has always believed that people have an immense capacity for redemption and deserve second chances. What we’re now learning about his past doesn’t fit the person we came to know as Mike King. His death evokes a range of emotions.”
- “Our team followed all protocols outlined by the House to contract additional security. We were approved to use this vendor who also provided security services for additional entities in the local community and also worked closely with law enforcement agencies, including Capitol Police.”
- “The fact that an individual was able to somehow circumvent the vetting processes for something as sensitive as security for members of Congress highlights the loopholes and shortcomings in many of our systems.”
Crockett also said an early review of Robinson’s background did not show violent offenses. She called the situation “incredibly alarming” and said it points to bigger problems in the way security workers are screened for elected officials.
Her office has not answered more questions and says it is waiting for more facts from the ongoing investigation.
Growing Concern Over Security Gaps
The case has sparked a wider debate over congressional security standards. Many people now want to know how a man with theft convictions, active warrants, and a federal impersonation investigation got this close to a member of Congress.
People familiar with security procedures point to weak spots in the House system. While lawmakers do submit security contracts for approval, deeper background checks may depend on self-reported information or limited records searches. Robinson’s use of aliases likely made that even harder to catch.
He also earned trust in local law enforcement circles. He placed officers in paying jobs and claimed ties to Capitol Police, and those claims appear to have gone unchallenged for years.
Dallas police are still investigating the shooting. At the same time, federal authorities are reviewing the impersonation case and the alleged fraudulent business activity.
Reaction has been sharp and divided. Some critics say Crockett should face questions about how her team hired security. Others argue she relied on approved vendors and trusted local contacts. Supporters also point to her long-standing belief in second chances.
The release of graphic bodycam footage added more pressure. The video shows the moment officers fired, and Dallas police say the SWAT team acted because Robinson pointed a gun at them.
What This Means for Congressional Protection
The shooting has exposed weak points in the way elected officials are protected. Members of Congress often rely on private security for district events, campaign appearances, and travel. At the same time, threats against public officials have increased, which has pushed demand for security even higher.
Still, this case shows how vetting can fail. Because of that, more people are calling for mandatory background checks, live warrant searches, and outside verification of private security vendors.
Robinson’s path, from repeat arrests to fake federal agent claims to trusted bodyguard, shows how far deception can go when systems rely too much on appearances and not enough on hard checks.
Friends and former associates say Mike King seemed professional and dependable. The truth about his identity has left many of them stunned.
As the investigation moves forward, one fact stands out. The death of Diamon-Mazairre Robinson has forced lawmakers, staff, and the public to take a harder look at trust, redemption, and safety in American politics.
Dallas police have not yet released a full autopsy report or final toxicology results. The woman who was inside the vehicle with Robinson has not been charged. Federal charges tied to the impersonation case are still under review.
The House Administration Committee has received a briefing on the matter, but no formal changes to security procedures have been announced.
For Crockett and her team, this marks the loss of someone they trusted. For the public and for lawmakers, it has become a warning sign and a demand for real answers on how to stop a similar breach from happening again.
