WASHINGTON (Reuters) -President Donald Trump said on Wednesday he will sign an executive order this week to dismantle "domestic terrorism networks," which he has previously alleged are funded by left-wing groups inciting violence against conservatives.

"The continuing violence from Radical Left Terrorists, in the aftermath of Charlie Kirk's assassination, must be stopped," Trump wrote on Truth Social. "I will be signing an Executive Order this week to dismantle these Domestic Terrorism Networks."

Trump made the announcement on the same day a gunman killed one detainee and wounded two others at an Immigration and Customs Enforcement field office in Dallas. ICE has led Trump's sweeping crackdown on illegal immigration, which has drawn widespread criticism from Democrats and immigration activists.

Trump and his allies have repeatedly suggested, without evidence, that the suspect in conservative activist Kirk's assassination two weeks ago was part of a broader coordinated left-wing movement.