
Authorities in Northern California said Wednesday they have arrested three teenage boys involved in violent attacks against Donald Trump supporters following a political rally last week in San Jose.

One of the underage suspects was arrested for assault with a deadly weapon after he was recorded on video using a blunt object to strike a man who can then be seen bleeding from the head, the San Jose Police Department said in a statement.

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Caught on camera: A man chases a Trump supporter and tackles him at a rally in San Jose, California

Police arrested two more suspects who were caught on video physically assaulting a man, before pursuing him and tackling him to the ground. One was arrested for assault with a deadly weapon and the other for battery, the department added.

The suspects' names have not been released due to the fact they are minors.

The department said it expects to make more arrests and released two photos of a man they say is responsible for a further assault.

The man continues his attempt to bring the young Republican to ground

The Trump supporter falls to the ground, having been put there by his attacker

The young man lies on the grass, his tormentor stands over him

The arrests come after mounting criticism of the San Jose Police Department for what some say was a tepid and tardy response to attacks on Trump supporters after a political rally on June 2.

On Tuesday, authorities named the four men arrested on the day of the rally as Ahmed Abdirahman, 19, Robert Trillo, 18 (both accused of assault with a deadly weapon), Michael Kitaigorodsky, 19, who was arrested on suspicion of refusal to disperse, and Antonio Fernandez, 19, arrested and charged with assaulting a police officer.