Federal authorities have identified the man they say carried out a deadly shooting at a U.S. Immigration and Customs Enforcement (ICE) field office in Dallas on Wednesday. One person was killed and two others were critically wounded before the gunman died of a self-inflicted gunshot wound, authorities said.

Acting ICE Director Todd Lyons identified the shooter as 29-year-old Joshua Jahn.

All three of the victims shot were detainees of the facility, federal authorities confirmed.

"Anti-ICE" messaging was found on shell casings at the scene after shots were fired "indiscriminately" at the facility and at a van in the sallyport, officials said.

Documents show Jahn had ties to North Texas and Oklahoma. According to records, his parents live in Fairview, a town in Collin County, just

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