UC spokesman Pete King says police arrested at least 16 protesters who tried to cross a police barricade at the building where the regents were meeting on the San Francisco campus Wednesday.
Christine Byon of the UC Students Association says a group of student protesters was pepper-sprayed.
Inside the meeting, several students urged the board to vote against the proposed 8-percent tuition increase.
UC officials say the fee hike is needed because the cash-strapped state has slashed funding to the 10-campus system.
The board is scheduled to vote on the tuition proposal Thursday.
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