Protesters clashed with New Jersey State Police outside the Delaney Hall immigration detention centre late on Saturday in Newark as demonstrations against US immigration enforcement turned violent, according to media reports.
More than 200 people gathered outside the facility, where anti-ICE and pro-ICE groups assembled throughout the day, reported NJ.com.
Tensions escalated after some protesters pushed against metal barricades surrounding the detention centre.
Police in riot gear responded by firing tear gas and moving in to disperse the crowd.
Mounted officers were later deployed as some demonstrators threw rocks and bottles at law enforcement, while others urged compliance with police orders.
Protesters also set a fire in the street outside the facility, said the report.
The unrest came despite an earlier appeal by New Jersey Gov. Mikie Sherrill for calm.
