The man charged with shooting and killing a police officer in Arvada, Colorado, on Monday allegedly left behind a note to be found by investigators explaining his deepened hatred for cops and his objective to hurt Arvada police officers.

The Gazette reported that the suspect, Ronald Troyke, shot and killed Officer Gordon Beesley on Monday in Olde Town Arvada. A bystander, John Hurley, also died after being caught in the crossfire.

Troyke was fatally shot in the incident.

Arvada Police spokesman David Snelling told CBS4 upon inquiry that "the DA has asked us to refrain from details" regarding the events of the shooting.

Read more: Newsweek