A Denver resident has been plotting to assassinate Colorado Attorney General Phil Weiser since July, training for the attack and even visiting the area near Weiser’s home on several occasions, according to documents from the Denver Probate Court.

An FBI investigation discovered 28-year-old Bryce Shelby’s plan after Shelby told an undercover agent he intended to shoot Weiser in the head.

According to the affidavit, Shelby said he will “pull the trigger” himself and does not mind getting “blood on his hands.” He also said he doesn’t care if Weiser’s wife, children or dog has to die in the process.

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“(Shelby) reached out to people he believes are members of the military to obtain training and tactics and methods on how to carry out an assassination and get away with it,” said Denver Detective Brad Baker during a hearing on Nov. 4.

Shelby said he wants to get away with the assassination to see if it achieves his desired political outcomes and so, if it doesn’t, he can assassinate more government officials.

In conversations with the undercover FBI agent, Shelby also expressed the desire to kill Denver Mayor Michael Hancock, Aurora Mayor Mike Coffman and the police chiefs of both cities.

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The FBI first became interested in Shelby after threats against multiple government employees posted on Instagram and Facebook were reported to law enforcement.

Shelby, who self-identifies as a member of the Black Panther Party, has posted numerous threats against law enforcement officers on social media.

Denver police obtained an extreme risk protection order in November to seize Shelby’s guns as he presented “a serious risk” of causing injury to himself or others. Shelby surrendered his gun on Nov. 12.

Shelby had 400 rounds of ammunition and two semi-automatic rifles, one a “ghost rifle” made by a friend without a serial number. He is known to have attended protests in Denver and Aurora armed with these rifles.

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Shelby has not yet been charged with a crime in connection to the assassination plot allegations.

“From my understanding, the investigation into the respondent by the FBI has come to an impasse where they have not been able to develop enough information at this time to charge him criminally,” Baker said on Nov. 4.

Weiser has chosen not to file criminal charges against Shelby, his spokesman Lawrence Pacheco told The Denver Post. Pacheco did not say why Weiser made the decision.

Shelby’s criminal history includes charges from 2011 for public consumption of marijuana and illegally possessing a weapon in Aurora, according to the affidavit.