Probe into leak of Nashville school shooter manifesto comes back inconclusive, police say

An investigation into the leak of the journal pages of the Covenant school shooter has come back inconclusive, according to Nashville police. 

Authorities announced in an email Friday night that police have "exhausted all available investigative avenues" in the probe, according to The Hill. 

Investigators who interviewed officers on the scene said that three cell phone pictures of the pages were taken that were found in the shooter's vehicle.

“The department does not have the ability to compel statements or cooperation from former employees,” the police statement reads.

Last month, Nashville Mayor Freddie O'Connell ordered a probe into leaked pages of the manifesto of Audrey Hale, who killed six people when opening fire earlier this year on a private Christian school.

As a result of the probe, seven police officers were placed on "administrative assignment." All seven have returned to their regular duties. 

Conservative media host Steven Crowder first published the leaked images of the notebook on social media, which prompted the investigation. 

The Hill reported that the shooter left behind at least 20 journals, as well as a suicide note and a memoir, according to court filings.