Attorney General Pam Bondi said on Friday that she would send Justice Department personnel to protect immigration officers and detention centers, two days after a shooter opened fire at a U.S. Immigration and Customs Enforcement facility in Dallas on Wednesday.

“At my direction, I am deploying DOJ agents to ICE facilities — and wherever ICE comes under siege — to safeguard federal agents, protect federal property, and immediately arrest all individuals engaged in any federal crime,” Ms. Bondi wrote in a social media post on Friday.

Ms. Bondi said that she would instruct anti-terrorism task forces across the country to “disrupt and investigate all entities and individuals engaged in acts of domestic terrorism, including the repeated acts of violence and obstruction against federal agents.”

She gave no details about when and how many Justice Department personnel would be deployed, or what agencies they would come from.

The gunman who attacked the Dallas facility, killing one detainee and injuring two others, had written “ANTI-ICE” on one of the rounds, according to images released by Kash Patel, the director of the F.B.I. No law enforcement officers were injured.

The Dallas attack came after two July shootings in Texas, at a detention center in Alvarado and at a border patrol facility in McAllen. Federal officials have described the shootings as a pattern of violence against federal immigration officials.