A member of Rep. Jasmine Crockett’s security team was killed by police in Dallas during a standoff, the congresswoman confirmed in a statement, writing that she was “shocked by some of the concerning revelations.”

Officials say Diamon Robinson, 39, was confronted in a parking lot by Dallas police before he barricaded himself in a car, was forced out with tear gas and allegedly pulled a firearm on officers. Police shot and killed him.

Authorities said Robinson had a criminal history and was the subject of multiple “felony warrants.” Despite his criminal record, Robinson was able to work as security for a sitting member of Congress.

Crockett said her team followed protocols in contracting additional security and said the vendor had worked closely with law enforcement agencies, including the U.S. Capitol Police. Crockett called it “alarming” that Robinson was able to “circumvent the vetting process” and said the situation highlighted loopholes in the system.

Democratic U.S. Rep. Jasmine Crockett on Monday confirmed that a 39-year-old man who was killed in a standoff with Dallas officers last week was a member of her security team who had been using a fraudulent identity.

Diamon Mazairre Robinson lived as “Mike King” for years, during which he operated security businesses that hired off-duty officers, Dallas police said during a Monday press conference. Robinson’s real identity was exposed after Irving police put out a bulletin for a vehicle with stolen government plates, which a Dallas officer had seen while working with Robinson on a security job six months earlier.

Robinson fled Dallas police, who attempted to pull him over on March 11, escaping a brief chase before being located once more in a hospital parking garage, officials said. After an hours-long standoff with negotiators, officers shot and killed Robinson after he stepped out of the vehicle and drew a handgun.

In a statement posted on social media, the Dallas congresswoman confirmed that Robinson had helped provide security for her for years, and said her team had followed U.S. House procedure for contracting security. She also said Robinson, acting as Mike King, had worked with multiple law enforcement agencies, including Capitol Police. A spokesperson with the Capitol Police did not respond to an immediate request for comment.

Crockett said that her team was unaware he had been acting under an alias, but that Robinson had always maintained positive community relationships and never gave anyone reason to suspect he had misconstrued his identity.

“What we’re learning about his past doesn’t fit the person we came to know as Mike King,” Crockett said. “ His death evokes a range of emotions. Our hearts grieve the loss of someone we knew and the lost good that could have come from his redemption.”

DPD Deputy Chief William Kenneth said investigators did not discover Robinson’s true identity until after Crockett’s campaign for the Democratic nomination in the U.S. Senate race had ended. Crockett, a former public defender, said in her statement that she believed in people’s capacity for redemption and second chances. She also acknowledged Robinson’s prior criminal history and said they did not believe he had been charged with any violent offenses.

Robinson had posed as a federal officer under the “Specialty Dignitary Police,” a nonexistent agency he created identification cards for, officials said. He also had two active felony theft warrants from 2017, a parole violation, two vehicles with stolen government plates and multiple stolen firearms, including the one he produced before being shot, Kenneth said.

Cooper Flagg scored 27 points, Naji Marshall added 25 and the Dallas Mavericks bounced back from a 33-point loss to Cleveland two days ago to defeat the Cavaliers 130-120 on Sunday afternoon.

The Mavericks, who were routed 138-105 on Friday night, pulled away in the second half to snap a seven-game losing streak against the Cavaliers.

P.J. Washington had 20 points and 11 rebounds for Dallas, which won for just the second time in 11 games.

It was the 12th time this season Flagg has scored at least 27 points. The top overall pick in the 2025 NBA Draft was 10 of 17 from the field and also had 10 assists and six rebounds in 33 minutes.

Cleveland’s Donovan Mitchell had 26 points and Max Strus scored 24 points in his season debut. The seventh-year forward missed the first 67 games because of a broken left foot.

Strus suffered a Jones fracture — a break of the bone that connects the little toe to the base of the foot — during offseason training and underwent surgery on Aug. 26.

The Cavaliers committed 16 turnovers, which resulted in 25 Mavericks’ points.

There were 11 lead changes and seven ties in the first half before Dallas emerged with a 60-59 advantage at halftime.

The Mavericks scored the first seven points of the third quarter and extended their lead to 78-67 on a 3-pointer by Ryan Nembhard with 7:20 remaining.

The Cavaliers got within seven before the Mavericks countered with a 10-2 run late in the quarter.

Dallas’ John Poulakidas had 10 points in his second NBA game. Poulakidas, a rookie from Yale who signed a two-way contract on March 1, had eight points and two rebounds in the third quarter.

The Mavericks led by 21 in the fourth quarter before the Cavaliers made a late run.

Up next

Up next

Mavericks: At New Orleans on Monday.

Cavaliers: At Milwaukee on Tuesday.