The actions of former Minneapolis police officer Derek Chauvin are being reviewed by state police conduct investigators, according to court documents filed Tuesday.
In a letter to the Hennepin County District Court, an official from the Minnesota Board of Peace Officer Standards and Training requested records associated with the state's prosecution, indicating the standards board is "obligated to review the facts and circumstances of this matter."
Chauvin was charged by prosecutors with second-degree murder, third-degree murder and second-degree manslaughter for his alleged role in the May 25 death of Minneapolis resident George Floyd.
In eyewitness video footage of the police encounter involving Floyd, Chauvin was seen pressing his knee to the African American man's neck for several minutes as Floyd lost consciousness. Three other officers involved in the incident also face charges.
The Hennepin County Attorney's Office told CNN Chauvin had his knee on Floyd for seven minutes and 46 seconds -- not eight minutes and 46 seconds as originally stated in the criminal complaint.
"These kinds of technical matters can be handled in future amendments to the criminal complaint if other reasons make it necessary to amend the complaint between now and any trials," the county said in a statement, adding the error "made no difference" in the decision to charge the former officer.
The local medical examiner ruled Floyd's death a homicide, as did experts hired by his family, although they do not agree on what caused it.
Disclosure of the state's police conduct and licensing board's involvement makes it the fourth official review of the circumstances surrounding Floyd's death.
Besides the state's criminal investigation, the FBI is conducting a federal civil rights investigation into the matter. The Minnesota Department of Human Rights also is reviewing an entire decade of police records from the Minneapolis Police Department to determine whether there is evidence to suggest the department has engaged in a pattern of unfairly targeting of minorities.
The state Board of Peace Officer Standards and Training "is responsible for licensing over 10,500 active peace officers and 109 active part-time peace officers" in Minnesota, according to the agency. If Chauvin is found to have engaged in misconduct, the agency can suspend his law enforcement license.
While not speaking about any specific case, Erik Misselt, the board's interim executive director, told CNN the penalty for violating policing standards includes a range of punitive options, including the suspension or revocation of a police officer's law enforcement license.
News of the board's involvement in investigating Chauvin is not the first time the agency has found itself in the public spotlight following Floyd's death.
Minnesota Gov. Tim Walz said last week he wants to expand the board and establish a new police-community relations council. While announcing new proposed policing reform measures, Walz called for the requirement of new "real-time data collection and analysis of complaint, discipline and use of force data and use it to inform reforms at the POST board," particularly as it relates to the licensing of police officers.