In a Thursday update on yesterday's shooting at a Dallas ICE facility, which killed one detainee and badly injured two more, prosecutors revealed that the shooter left behind notes containing a plan to cause'real terror' against immigration enforcement officials.
Nancy E. Larson, the acting US attorney for the Northern District of Texas, told a press conference that 29-year-old Joshua Jahn was 'targeting ICE agents and personnel,' whom he described as 'people come here to get a dirty salary.'
Jahn killed himself after a bold rooftop attack from a nearby building on Wednesday, September 24, in which he fired indiscriminately at the ICE office while detainees were being moved in an unmarked vehicle. No law enforcement personnel were injured.
Larson told the Thursday press conference, in Texas, that Jahn had written that he intended to maximize lethality against ICE personnel while trying to minimize injury to their detainees or passers-by. He also hoped to cause severe property damage to the facility.
It ‘seems that he did not intend to kill the detainees or harm them. It’s clear from these notes that he was targeting ICE agents and ICE personnel,’ she said, adding that Jahn’s actions were the ‘definition of terrorism.’
Larson went on to note the ‘tragic irony’ that the detainees were struck.
🚨BREAKING🚨:DALLAS ICE SHOOTING UPDATE: ⚠️
— The_Independent (@TheIndeWire) September 24, 2025
Authorities say rounds recovered near shooter Joshua Jahn’s body had “ANTI-ICE” written on them. Investigators are examining the message as they probe the motive behind the rooftop attack that left multiple detainees dead. pic.twitter.com/Eqbwg0NAas
Jahn also stated in his notes that he was working alone and that he did not intend to survive the attack, officials said.
Following the shooting, speculation has grown regarding the suspect's motivations, including claims that Jahn was a communist radical, which the shooter's family has rejected.
The Trump administration, including FBI Director Kash Patel, Vice President JD Vance, and Department of Homeland Security Secretary Kristi Noem, have pointed to bullet casings recovered at the scene with the words 'anti-ICE' written on them as evidence that Wednesday's shooting was politically motivated.
However, family and former acquaintances have portrayed Jahn as neither aggressively political or concerned about ICE, but rather as an internet provocateur who says things for shock value.
The Dallas shooting is another reminder to politicians and the press of the need to lower the rhetorical temperature. https://t.co/GoDuPCTsX6
— Nicole (@gorgeous_manon) September 25, 2025
Jahn’s brother, Noah Jahn, said his older sibling wasn’t especially interested in politics and had not recently shared negative opinions about federal immigration policy.
‘He didn’t have strong feelings about ICE as far as I knew,’ Noah Jahn told NBCDFW. ‘I didn’t think he was politically interested. He wasn’t interested in politics on either side as far as I knew.’
Read a recovered handwritten note from the home where Jahn had been living, ‘Hopefully this will give ICE agents real terror, to think, ‘is there a sniper with AP rounds on that roof?”
BREAKING: Even the legacy news is being FORCED to admit the motive behind Joshua Jahn was a CLEAR HATRED for ICE.
— Gunther Eagleman™ (@GuntherEagleman) September 25, 2025
They're all GUILTY for inciting this violence!
"It‘s a clear motive. These were described as loose notes. But you know the notes saying, you know, this was just me… pic.twitter.com/F4nghZDYql
