DALLAS - New video shows ICE agents and detainees trying to escape during an attack on the Dallas ICE facility on Wednesday.

Dallas ICE Shooting

What's new:

Security video from outside the facility on Stemmons Freeway shows two white transport vans in the sally port. After a few seconds, federal officers and detainees can be seen jumping out of one van.

The video also shows detainees in shackles being rushed into the building.

After gathering evidence from the suspect’s home, investigators now believe a sniper perched on a nearby roof was targeting ICE agents in the planned attack.

Instead, one detainee was killed, and two other detainees were critically injured.

Investigators said the suspect, 29-year-old Joshua Jahn, took his own life. He reportedly left behind handwritten notes

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