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Crime Alert, I'm Nancy Grace, breaking crime news now on Helmerano crashes into four cars on the Dallas

freeway, then gets out, grabs an 8-inch knife from his trunk trunk and attacks the other drivers.

Bystanders try to subdue Moreno, he stabs one of them and hijacks a truck running

over the owner. Moreno then hijacks a truck running over the owner. Moreno then hijacks a second car.

Again, the car's owner is run over, but this time the owner's dragged across two lanes of

traffic. The car crashes, surprise, surprise, and a group

of men pull Moreno from the car holding him down until police arrive.

Nancy, Marino's violent rampage unfolds during morning rush hour.

Moreno first stabs a man who confronts him with a metal pipe after he jumped on a bystander's

windshield.

That victim was stabbed in the ear and stomach.

Each time a bystander tries to help a victim,

Moreno injures that bystander.

This vicious cycle loops three times

...