Crime Alert, I'm Nancy Grace, breaking crime news now.

16-year-old Joshua Cooper sends a video to friends on Insta, asking for help to dispose

of a body.

Cooper points the camera at a 13-year-old girl, covered in blood from a gunshot wound.

One recipient tells Mom what she saw, Mom calls police.

Nancy Benzalem Police had to Cooper's Pennsylvania home, and the teenager runs out of a backdoor,

stating a short foot chase before he's apprehended.

Police find the girl dead on the floor in a bathroom, and report there were substantial

efforts to clean up the crime scene.

Cooper tells Pennsylvania cops the death was an accident.

He had access to guns because the lock on his dad's safe is inoperable.

The teen now charged with murder.

Trey Ginko's neighbor calls Cincinnati cops when Ginko threatens her with a gun and says

Ginko has been acting crazy.

Ginko's search history reveals he self-identifies as an in-sell or involuntary celibate.

Festo detailing his plan for the attack, his most recent Google search asked when does

preparing for a crime become an attempt.

Ohio cops find an AR rifle with illegal fittings, loaded magazines, body armor, and boxes

and boxes of ammo in Ginko's car.

Ginko originally faced weapon possession charges, but he ended up pleading guilty to plotting

a hate crime.

Derek Hilton enters a Delaware pizza shop and attacks the owner, stabbing the man dead,

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