No outside agencies or businesses will be able to directly hire off-duty police officers through the scheduling platform RollKall after police say a man impersonating law enforcement and killed by SWAT officers earlier this month slipped through the cracks.
Police Chief Daniel Comeaux announced the change in a memo Friday. He said Diamon-Mazairre Robinson, 39, who worked security for U.S. Rep. Jasmine Crockett, had a company that was active and compliant with the Texas Secretary of State’s records as of March 2025.
Comeaux said this “allowed him to register as an external RollKall coordinator requesting services and he also fraudulently created an officer account.” Robinson logged into RollKall as early as April 2025.
The police department caught wind of it nearly a year later, after it found an individual using the platform was impersonating a peace officer. The police department’s intelligence unit investigated and the fugitive unit tracked Robinson down earlier this month.
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Police said Robinson had multiple active warrants against him, with some dating back to 2017. He worked for Crockett under the alias Mike King, and police said used an alias to connect off-duty officers with work. Police said he maintained a false persona for many years.
Amid questions about the platform’s integrity, Comeaux said Robinson had no access to personal information of officers. No investigations or proprietary information seemed to have been compromised.
Meanwhile, the department met with RollKall executives to review safeguards in place.
The rule change, Comeaux said, will ensure all departmental policies and legalities are followed with “no interruption of off-duty services.” The rule goes into effect March 25.
The police department used RollKall, a job tracking system for off-duty jobs, to help officers find and manage additional work. The city started transitioning to the platform in 2023 after a 2018 city audit called for improvements in the oversight and documentation of the department’s previous off-duty program. RollKall is an Irving-based company.
By late 2024, the platform was deployed throughout the department.
