The man in the video is a longtime Minnesota Department of Corrections employee.
Three other inmates who contracted the virus are hospitalized in critical condition.
Hardel Sherrell's mother has continued to push for her son's death to be reviewed.
It's the first prison death due to COVID-19 in Minnesota.
He had been transporting the woman to another jail.
She was alleged to have used her position to lobby for funding for her husband's organization.
Sarah Walker resigned from her position this week.
This follows a rash of similar incidents at Minnesota prisons throughout 2018.