Charlie Kirk’s suspected killer, Tyler Robinson, allegedly texted his roommate the day of the shooting and discussed his rifle, possible motive and other details on the planning surrounding the event, according to charging documents released by Utah County officials on Tuesday.

Robinson’s roommate told police about a note left by Robinson under the keyboard, which read, “I had the opportunity to take out Charlie Kirk and I’m going to take it.” Police say they found a photo of the note.

The roommate was alerted to the note by a text from Robinson, which led to the following exchange, and which CNN transcribed from the charging documents:

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