The Department of Homeland Security (DHS) said Saturday that it doesn't have information about any "specific, credible threat" to the U.S. homeland, but warned that groups are capable of carrying out "operations" in the U.S.

The information in a DHS bulletin follows a recently announced U.S. strike that killed top Iranian general Qassem Soleimani.

"At this time we have no information indicating a specific, credible threat to the Homeland," DHS said, but cautioned that "Iran and its partners, such as Hizballah, have demonstrated the intent and capability to conduct operations in the United States."

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The bulletin also warned that Iran is capable of "carrying out attacks with temporary disruptive effects against critical infrastructure in the United States" and "likely views terrorist activities as an option to deter or retaliate against its perceived adversaries."

Iran has threatened "harsh retaliation" after the Pentagon announced this week that President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE directed a strike that killed Soleimani.

On Friday, the State Department urged U.S. citizens to leave Iraq "immediately."

President Trump has defended the attack, saying that it was done to stop a war and Secretary of State Mike Pompeo Michael (Mike) Richard PompeoThe Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep Trump's foreign policy successes confound his detractors It's time for a Jackson-Vanik Amendment for China MORE has said that the action was due to an "imminent threat" to American lives.

Democrats have criticized the strike as an escalation that could provoke violence.

Acting Homeland Security Secretary Chad WolfChad WolfDHS IG won't investigate after watchdog said Wolf, Cuccinelli appointments violated law Judge blocks some asylum restrictions, rules Chad Wolf serving as DHS secretary likely unlawful DHS asks Schiff to reconsider expanded probe after whistleblower complaint, declines additional interview requests MORE said in a statement that Saturday's bulletin was issued to assure the public that DHS is "actively monitoring and preparing for any specific, credible threat, should one arise.”