The battle outside a controversial New Jersey immigration detention center intensified on Saturday as Governor Mikie Sherrill issued a stark warning to what she described as outside agitators and extremist organizations.

After days of escalating confrontations outside Newark's Delaney Hall facility, the Democratic governor revealed that the overwhelming majority of protesters arrested during Friday night's disorder were not even from New Jersey.

The disclosure came as hundreds of rival demonstrators, one side backing ICE and the other demanding the closure of the detention center, faced off behind newly erected barricades under the watch of heavily armed law enforcement officers.

'Five of the six people arrested last night by state police were from outside New Jersey, and some national extremist groups have become involved in the protest here today,' Sherrill said during a Saturday afternoon briefing.

She delivered a direct message to those she accused of traveling to Newark to inflame tensions.

'To the people coming from out of state to create chaos and dangerous situations: you should not be here. You are not helping the people detained at Delaney Hall.'

Sherrill also ordered state police to flood the area in an effort to prevent further violence.

The warning followed another turbulent night around the facility, where authorities say demonstrators ignored orders to disperse and police were forced to intervene after tensions spiraled.

State officials said one person was charged with disorderly conduct and endangering another person, while the remaining five faced charges including disorderly conduct and obstruction. 

According to New Jersey State Police, four of those arrested were from New York, one was from Pennsylvania and only one was a New Jersey resident.

The governor's remarks came amid growing concern that the protests, initially focused on allegations of poor conditions inside Delaney Hall, are attracting increasingly militant activists from outside the region.

Sherrill did not identify the extremist groups she referenced. She praised peaceful demonstrators while urging all sides to step back from confrontation.

The governor insisted New Jersey would continue protecting the right to protest but warned that anyone arriving with the intention of provoking violence would face a growing law enforcement presence determined to keep the increasingly volatile situation from exploding into something far worse.

Video circulating on social media Saturday appeared to show self-described anti-ICE demonstrators confronting individuals associated with the Proud Boys.

Authorities say some of the disorder has gone beyond shouting matches.

New Jersey State Police Lt. Col. David Sierotowicz said individuals involved in Friday's unrest targeted a marked patrol vehicle and issued threats toward law enforcement personnel.

Those actions, he said, created immediate safety concerns as tensions continued to rise. 

By Saturday morning, the area around Delaney Hall had effectively become a fortified protest zone.

Police established separate demonstration areas for rival groups after approximately 200 supporters of ICE and roughly 300 anti-ICE demonstrators gathered outside the facility. Fencing and barricades were used to keep the opposing crowds apart.

At various points, officers equipped with riot shields guarded entrances to the detention center while federal agents and armored vehicles remained visible nearby.

Despite the hostile atmosphere, the two sides largely remained separated throughout the day.

Pro-immigration activists beat drums, waved signs and chanted slogans demanding the closure of Delaney Hall, arguing detainees were being subjected to unsafe and inhumane treatment.

Supporters of ICE answered with American flags, pro-enforcement signs and chants of 'USA.'

Many anti-ICE demonstrators pointed to allegations made by detainees and advocacy groups regarding conditions inside the facility, accusations that both federal authorities and the facility's operator strongly deny.

The Department of Homeland Security has repeatedly pushed back against claims of mistreatment and on Saturday condemned what it described as a 'coordinated campaign of violence against our ICE law enforcement.'

'This violence against law enforcement must end,' the agency said.

DHS has also alleged that federal officers stationed at Delaney Hall have faced assaults, threats and other acts of intimidation during the demonstrations.

The GEO Group, the private company that operates Delaney Hall, similarly rejected accusations concerning conditions inside the facility. 

The company said staff recently responded to a detainee altercation using approved control measures and maintained that all actions complied with federal standards.

The protests have also drawn attention from figures aligned with the Trump administration.

Former Border Patrol commander-at-large Gregory Bovino sharply criticized the federal response to the unrest, arguing authorities had failed to move aggressively enough to restore order.

'I don't know who's holding these guys back, but basic riot control starts with gas,' Bovino wrote on social media. 

'This should've been over in 15 minutes. We're now on day three. Secretary Mullin's inaction is putting his own agents, the facility, and the detained aliens at risk. Hesitation isn't compassion - it's dangerous weakness.'

Bovino later suggested he was prepared to travel to Newark himself, posting an image appearing to show him boarding a flight and publicly questioning whether he should intervene.

The former border official's comments added another layer of political tension to a protest movement that has become a flashpoint in the national immigration debate.

Earlier this week, Homeland Security Secretary Markwayne Mullin said approximately 100 anti-ICE rioters had descended on demonstrations outside the facility and accused some participants of assaulting officers and throwing objects at law enforcement personnel.

'Throughout the night, six rioters were arrested for assaulting law enforcement officers,' Mullin wrote on social media.

'Local police refused to help our officers. Assaulting and obstructing ICE law enforcement is a crime and felony. Anyone who assaults law enforcement will be prosecuted to the fullest extent of the law. Law and order will prevail.'