The challenge encourages students to record a video of themselves telling a teacher there was a bomb or gun in their backpack as a "joke."

Three Kentucky teens were charged with terroristic threatening after participating in a TikTok challenge, Oldham County Police said in a news statement on Friday.

Investigators said that three separate incidents at Oldham County High School on Aug. 14, 15, and 17 were related to the TikTok challenge, which encourages students to record a video of themselves telling a teacher there was a bomb or gun in their backpack as a “joke.”