SAN DIEGO (AP) — A man accused of piloting a boat overloaded with migrants that crashed into rocks off San Diego's coast and killed three people kneed a U.S. Border Patrol agent in the face who was trying to put a leg shackle on him on the beach, authorities said.

Investigators said in an affidavit filed Tuesday in federal court in San Diego that the agent was not seriously injured but the hit left a red mark on his forehead.

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