Nancy Larson

we're here to tell you that late at night on july fourth friday night at approximately ten thirty seven p m at the prairie land ice detention center in alvarado texas ten to twelve individuals

dressed in black military-style clothing, began shooting fireworks and engaging in acts of vandalism at the facility.

And this was part of an organized attack.

It was a planned ambush with the intent to kill ICE corrections officers.

Make no mistake, this was not a so-called peaceful protest.

It was indeed an ambush.

The attackers used the vandalism that I described, which seemed to be designed to draw ICE personnel outside the facility, and it worked.

After about ten minutes of having convened, one or two individuals broke off from the group, they engaged in the graffiti,

They damaged vehicles and a guard structure.

The graffiti had such words as traitor, ice pig, other profanity.

Acting U.S.

Attorney Nancy Larson says notes found at Joshua Yon's home detail a plan to maximize ICE fatalities at the Dallas facility.

Calling this the definition of terrorism.

The 29-year-old killing a detainee and injured two others before fatally shooting himself.

Joe Rothrock, FBI agent in charge of the Dallas field office, noting the suspect engaged in a high degree of pre-attack planning, and they believe he acted alone.

Kristen Goodwin, Fox News.