A web of deceit unraveled for a congresswoman’s security guard.

Rep. Jasmine Crockett, known for her progressive stance, had a security guard with a shadowy past. This guard, who was on the run and had a criminal record stretching back to 2009, found himself under federal scrutiny before being fatally shot during a standoff with Dallas SWAT, as detailed by CBS News Texas.

The man, identified as Diamon-Mazairre Robinson, was the gunman involved in a tense encounter in a parking garage at Dallas’s Children’s Medical Center on Wednesday evening.

Robinson, 39, had assumed numerous identities, including that of “Mike King,” to infiltrate the Texas law enforcement scene. By portraying himself as a police officer, he managed to secure a role as a protector for the 44-year-old congresswoman.

Robinson’s past is checkered with arrests, occurring multiple times from 2009 to 2012, including seven theft charges, as reported by the outlet.

Despite facing both felony and misdemeanor charges, Robinson had admitted guilt to all accusations, resulting only in fines totaling under $2,500 and probation.

His largest sentence was 10 years of probation, according to court records viewed by CBS News Texas.

Robinson used his alias Mike King to elude discovery of his criminal past and find work in Crockett’s office, where he was most recently part of the security detail for her failed Senate campaign.

Video footage previously shared by the outlet captured Crockett walking beside her towering security guard as they arrived at a campaign stop.

He allegedly told officers that he was a detective with the US Capitol Police, which led to the federal probe into his alleged impersonation, sources told the outlet.

Robinson claimed he was in charge of several teams of guards around the Dallas area that worked at churches and downtown hotels.

Robinson is also believed to have used his fake identity to run a website called “Off Duty Police Services” that provided cops with jobs outside of work.

“Mike King” had been paid by Crockett’s office for “security services” as recently as last year, with one payment for $340.

It was not clear how Robinson gained the position working for Crockett.

The Dallas Police fugitive unit had been tracking Robinson on Wednesday when he led them to the parking garage connected to the children’s hospital, where he barricaded himself inside a car.

Robinson jumped out of his car and pointed a gun at police after they used tear gas to force him out. Because of the firearm threat, officers opened fire on the armed suspect and fatally shot him.

Crockett has not publicly commented on Robinson’s death.