José and Maribel Acevedo sued the Milwaukee Police Department in Milwaukee County Court for police body cam videos and a 911-call recording of an April 19 incident in which Milwaukee police allegedly choked their son to death. According to the petition for writ of mandamus:

FACTUAL BACKGROUND

4. At 7:28 am. on the morning of Sunday April 19, 2020, Milwaukee Police 911 dispatch received a call requesting police at 4502 W. Cleveland Ave., City and County of Milwaukee. Michael Mattioli made the 911 call and identified himself as an off-duty police officer who needed help at his house. (hereinatter referred to as the "911 call")

5. On the same 911 call another individual at the house identified by the initials "CP" told the 911 operator that help was needed because a man at the house was attacking them. CP identified that person as Joel Acevedo.

6. The length of the 911 call is 3 minutes and 35 seconds. The voice of Joel Aoevedo can be heard in the background. Throughout the duration of the call distressed breathing and gasping can be heard. On the 911 call Joel Acevedo can be heard to say the words: "let me go home ...."

7. In response to that call, Milwaukee Police Officer Robert Roach and Mark Sheremeta were dispatched at 7:34 a.m., to 4502 W. Cleveland Ave., and they were the first to arrive there. They arrived at the location, a single-family residence at 7:38 am.

8. Officer Roach was the first to enter the residence. At that time Officer Roach's body camera was recording the events. (here~ referred to as the "body camera video")

9. Upon entering the residence Officer Roach and Officer Sheremeta observed off-duty police officer Michael Mattioli straddling Joel Acevedo who was on the ground on his stomach. Joel Acevedo was not moving, his eyes were closed, and there were no signs of a struggle with Mattioli.

10. Officer Roach and Officer Sheremeta observed Mattioli's right arm underneath the neck area of Joel Acevedo in a rear naked choke hold. Mattioli's left hand was holding Joel Acevedo's head.

11. Joel Acevedo was taken to SL Luke's Hospital. He was listed in critical condition. He was unresponsive to outside stimuli and was on a ventilator. Joel Acevedo later died on April 25, 2020.

12. The Chief Medical Examiner performed an autopsy and reached a conclusion that the cause of death was "Anoxic Enccphalopathy due to Traumatic Asphyxia" and ruled the death a homicide.

13. On May 13, 2020, a erimJnal complaint was filed against Michael Mattioli for First Degree Reckless Homicide. Attached as Exhibit A is a Izue and correct copy of the Criminal Complaint against Michael Mattioli. [MORE]