US President Donald Trump has threatened to invoke the rarely used Insurrection Act to quell unrest over federal immigration enforcement operations in Minneapolis.

He threatened to send in troops following a night of protests and vandalism in the Minnesota city after an agent shot a man in the leg.

The Department of Homeland Security (DHS) said an officer opened fire after he was attacked by three Venezuelan nationals with a shovel and broom handle.

Tensions have been running high in Minneapolis since an immigration agent fatally shot Renee Nicole Good, 37, last week, sparking nationwide protests.

The Insurrection Act is a 19th Century law that allows active-duty military personnel to be deployed for law enforcement duties inside the US. Trump has previously indicated the possibility of invoking this law in other situations without taking action.

President Trump posted on Truth Social that he would leverage the law if Minnesota officials failed to manage what he termed professional agitators and insurrectionists. 

DHS reported that the recent shooting incident involved a car chase with Julio Cesar Sosa-Celis, a Venezuelan national with prior convictions. The agent reportedly acted in self-defense during an assault with a shovel and broom handle.

Protests have erupted across Minneapolis condemning the actions of ICE, with local officials calling for the agency's withdrawal from the city. Minneapolis Mayor Jacob Frey has demanded ICE leave, reflecting public sentiment against immigration enforcement tactics.

Democratic Governor Tim Walz has reached out to Trump, urging a de-escalation of tension while also criticizing ICE for creating unsustainable conditions in the community.

Following the incident, clashes between protesters and law enforcement led to damage to federal property, prompting the FBI to offer rewards for recovery and information on the incident.

As events unfold, the national debate over immigration enforcement practices and civil rights continues, with advocates on both sides pushing for their perspectives to be heard.