U.S. authorities have 32 people at a demonstration organized by a Quaker group at the border separating San Diego from Tijuana, Mexico.

Border Patrol spokesman Eduardo Olmos said 31 people were arrested for trespassing by the Federal Protective Service at Monday's demonstration and one was arrested by the Border Patrol for assaulting an agent.

A photographer for The Associated Press saw about a dozen people being handcuffed after agents warned them to back away from the border wall on the shores of the Pacific Ocean. The Border Patrol calls it "an enforcement zone."

About 300 people participated in the demonstration organized by the American Friends Service Committee. The rally also was to show support for a caravan of Central American asylum seekers.

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