New Jersey Governor Mikie Sherrill has called for the establishment of protected protest zones to minimise clashes with law enforcement.

Ras Baraka, the mayor of Newark in New Jersey, has imposed a curfew on the area surrounding Delaney Hall, the immigration detention centre that has become a flashpoint in the debate over United States President Donald Trump’s mass deportation drive.

The Sunday morning announcement came amid a flare-up in tensions outside the detention centre, which is run by the private contractor GEO Group, as part of a 15-year deal with Immigration and Customs Enforcement (ICE).

“Due to the escalating situation at Delaney Hall and the increasing need for police intervention, immediate action is required to protect public safety,” Baraka wrote in a statement.

“Multiple individuals have already been arrested and found in possession of weapons, underscoring the seriousness of the threat.”

As part of the curfew, movement will be restricted within half a mile (0.8km) of the detention centre between the hours of 9pm and 6am US Eastern time (1:00 to 10:00 GMT).

A nearby road, Doremus Avenue, will also be closed to pedestrians and vehicles that cannot verify their need to be in the area.

Since the reopening of Delaney Hall as an immigration detention facility last year, it has been the site of confrontations between law enforcement and protesters, including Mayor Baraka himself.

The month of May has seen more than a week of daily protests outside Delaney Hall, after lawyers for the detainees at Delaney Hall announced a hunger strike was unfolding inside.

Detainees have denounced the living conditions to human rights groups, reporting expired food, a lack of medical care and abuse at the hands of authorities.

The Trump administration has justified its mass deportation campaign as an effort to rid the US of “the worst of the worst”, framing undocumented immigrants as a criminal threat.

But critics point out that many of those detained have no criminal record, and some who do have only been cited for minor offences.

The Transactional Records Access Clearinghouse, a data-tracking service from Syracuse University, found that, as of April, roughly 71 percent of those in ICE detention had no criminal conviction.

To show solidarity with the hunger strike, protesters have been gathering outside Delaney Hall, locking arms to form human chains and creating barricades to prevent access.

But that has led to tense confrontations with law enforcement, who have used batons and pepper spray to try to clear roads to the facility.

Governor Mikie Sherrill called for the establishment of designated protest zones, to mitigate the likelihood of conflict between officers and demonstrators.

But clashes have continued. Overnight on Wednesday, six protesters were arrested.

Politicians themselves have encountered tense interactions at Delaney Hall.

A year ago, one protest resulted in trespassing charges against Mayor Baraka and assault charges against US Representative LaMonica McIver, after a disagreement over which officials could enter the facility for an inspection.

While the charges against Baraka were dropped, McIver continues to face legal proceedings. She has denied the charges and called the prosecution politically motivated.

“One year ago, the Trump administration threw baseless charges against me for conducting oversight to protect immigrants at Delaney Hall,” McIver wrote on social media on Saturday.

“Have they tried to silence me? Yes. Have the stakes risen? Yes. Am I backing down from speaking up for you? Never.”

This past week, Governor Sherrill was also denied access to the facility. She has since issued a statement calling for Delaney Hall to be shut down.

At a news conference on Saturday, she blamed “national extremist groups” for arriving from out of state and escalating tensions. She added that the current precautions were designed to protect the safety of peaceful protesters.

“I urge those protesting outside of Delaney Hall to bring the temperature down, so we can focus on the detainees and their families,” Sherrill said.

She suggested that the actions of state and local officials would help head off any expanded ICE operations in New Jersey.

“I will not give ICE a pretext to expand operations at Delaney Hall or across our state. I will not put lives at risk,” she said. “I’m grateful to the vast majority of protesters who have assembled peacefully and raised their voices about Delaney Hall’s conditions.”