CHICAGO (AP) — Police have added additional security fences at a Chicago park where protesters clashed with police near the site of the Democratic National Convention ahead of a second day of planned protests Tuesday, including one outside the Israeli Consulate.

The park, located a block from the convention arena, served as a destination point for a march of thousands calling for a cease-fire in the Israel-Hamas war. Several dozen activists broke off from the main group, breached the fencing, and were pushed back by police, resulting in multiple arrests.

Police planned to give an update on arrest numbers Tuesday morning.

The Chicago chapter of the National Lawyers Guild said 12 people were arrested on Monday and two of them required medical attention. Two people were also arrested on misdemeanor property damage and resisting arrest charges during a protest march Sunday night.

Authorities said the inner security perimeter surrounding the United Center was not breached and there was no threat to those attending the convention.

On Tuesday morning, an extra line of fencing was installed at the park, and the tall metal barriers were reinforced to prevent protesters from lifting and removing the panels in the future. No police officers or protesters were present at the park early Tuesday.

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Organizers had hoped at least 20,000 people would take part in Monday’s rally and march, but it appeared that only a few thousand were present, though city officials declined to give a crowd estimate.

Closer to downtown Chicago, security was tighter than usual — including law enforcement officers with weapons slung across their bodies — outside the office building that houses the Israeli Consulate and a major city transportation hub. Metal barricades were set up, and an officer said they were preparing for a 7 p.m. demonstration.

The consulate, located about two miles from the United Center, has been the site of numerous demonstrations since the war in Gaza began in October. It is in a building connected to the Ogilvie Transportation Center, a major commuter rail station.

Most of the largest demonstrations have been organized by the Coalition to March on the DNC, which has focused on calling for a cease-fire in Gaza. But smaller protests have popped up around the city, including disruptions at the convention’s welcome party at Navy Pier.