FERGUSON, Missouri— The police officer who shot and killed unarmed teenager Michael Brown may not have filled out a detailed incident report following the Aug. 9 shooting.

Close video As Lawrence predicted, no incident report St. Louis County prosecutors office confirmed that Ferguson PD didn’t file a report after the shooting death of Michael Brown. Our panel joins Lawrence. St. Louis County prosecutors office confirmed that Ferguson PD didn’t file a report after the shooting death of Michael Brown. Our panel joins Lawrence. share tweet email Embed

During a briefing with the St. Louis County Prosecutor’s Office on Thursday, prosecutors told NBC News that since turning over the investigation into Brown’s death, the Ferguson Police Department had yet to generate an incident report.

Late Wednesday night, the American Civil Liberties Union of Missouri released what it described as a report turned over to it by the police department following a lawsuit it filed to obtain the records. The report is scant on details typically found on an incident report involving a homicide. It lists little more than the date, time and location of the incident. But more curious are the timestamps on the document.

According to information on the report a supervisor had not reviewed the document until Aug. 19, 10 days after the fatal shooting. And final approval wasn’t given until Aug. 20.

The ACLU released the report via Twitter on Friday night.

In response to our lawsuit for #MikeBrown shooting report, STL County Police Dept released: http://t.co/Zu07m9rkJz pic.twitter.com/VYupLYTxTh — ACLU of Missouri (@aclu_mo) August 20, 2014

The prosecutors office says no report, narrative, or details from the investigation will be released to the public while there is a grand jury empaneled to review the incident.