Anderson was the second of three people Mensah killed during a five-year stint with the Wauwatosa Police Department. Milwaukee County District Attorney John Chisholm cleared Mensah of criminal wrongdoing in each case.
Anderson’s family invoked a rarely used grand jury-like proceeding known as a John Doe to get a judge to take a fresh look at the case. The process has a judge listening to witness testimony to decide whether enough probable cause exists to justify charges.
This story was first published on June 21, 2021. It was updated on July 28, 2021 to correct that the judge considering the Anderson case was finding whether probable cause existed to charge the police officer, rather than bringing charges directly.