The United States Department of Justice has charged a 29-year-old Oregon man for assaulting a federal officer during a weekend riot outside the U.S. Immigration and Customs Enforcement facility in Portland.

According to court filings, Jairin Anzaldua-Ervin of Gervais was arraigned Monday in the U.S. District Court for the District of Oregon.

Federal prosecutors allege that Anzaldua-Ervin threw a large object at a federal officer, striking him in the chest during a violent confrontation at the ICE property on Saturday.

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The charge of assaulting a federal officer carries a maximum penalty of eight years in federal prison.

The incident occurred on October 4, when a crowd of demonstrators—many associated with Antifa networks—marched from Elizabeth Caruthers Park to the South Portland ICE facility around 1 p.m.

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The demonstration quickly escalated into trespassing and violent conduct on federal grounds.

An FBI affidavit filed with the court states that Anzaldua-Ervin ignored repeated lawful commands to leave the property and crossed restricted boundaries.

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When officers with the Department of Homeland Security’s Federal Protective Service moved in to clear the area, Anzaldua-Ervin allegedly hurled a “large and heavy” water bottle that struck one of the agents directly in the chest.

Federal agents immediately detained Anzaldua-Ervin following the assault.

Surveillance footage submitted as evidence reportedly captured the moment the object was thrown, supporting the charges filed by prosecutors.

“Throwing water bottles, or any object for that matter, at a federal law enforcement officer is not protesting — it’s a crime — and perpetrators will be arrested and federally prosecuted,” said U.S. Attorney Scott E. Bradford for the District of Oregon in a statement.

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“I thank the brave members of federal law enforcement who have protected federal employees at the ICE building for more than 110 consecutive nights.”

The Department of Justice said Anzaldua-Ervin was one of 13 individuals arrested during the latest confrontation at the ICE facility.

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He was released from custody after his initial appearance and is scheduled to return for further court proceedings.

The Department of Homeland Security and the Federal Protective Service have documented recurring clashes at the Portland ICE facility since the start of ongoing protests more than a year ago.

The site has been the target of organized demonstrations since June 7, when Antifa-affiliated activists began a 24-hour occupation demanding the closure of the facility.

Federal prosecutors confirmed that more than 30 individuals have been charged in connection with criminal acts at the site.

The charges include assault on federal officers causing bodily injury, arson, depredation of government property, and refusal to comply with lawful orders.

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Officials said additional cases remain under review as federal investigators continue to examine video footage and other evidence from multiple incidents.

Anzaldua-Ervin’s case is being prosecuted by the U.S. Attorney’s Office for the District of Oregon in coordination with the Federal Protective Service and the FBI’s Portland field office.