Affidavit recounts moments leading up to Olathe East shooting — Here’s what it says

Investigators say a "very frightened" student warned Olathe East administrators on the morning of Friday, March 4, that they had heard other students talking about a gun that had been brought to school. That prompted a search that ultimately led two assistant principals to call an 18-year-old senior to the main office. That senior, Jaylon Elmore, then allegedly pulled a gun from his backpack and began firing. File image.

Friday, March 4, at Olathe East High School began with a rumor overheard on a bus bringing students to school, according to police investigators.

The morning ended with three people shot and a text message pinging the cell phone of the alleged shooter: “I told you not to even have that gun on you.”