A day of demonstrations by students and anti-Wall Street activists was disrupted Tuesday when a campus police officer shot a man with a gun about a half-mile from the main protest site at the University of California, Berkeley.

The shooting occurred inside the Haas School of Business as thousands of demonstrators gathered on campus for a general strike and protests against big banks and education cuts.

Officials did not know if the suspect was part of the Occupy Cal movement, said Ute Frey, a spokeswoman for the university.

"I just hope it wasn't from the protest or the movement, because that's not what the movement is about," said Sadia Saif, a 19-year-old sophomore at UC Berkeley.

The shooting didn't prevent some 2,000 students and demonstrators from gathering at the steps of the university's Sproul Hall to vote on a list of demands and await a speech about class warfare by UC Berkeley professor and former U.S. Labor Secretary Robert Reich.

Reich was giving the Mario Savio lecture, named for the political and human rights activist and leader of the Berkeley Free Speech Movement in the 1960s. Savio's impassioned speeches on the same steps against the Vietnam War and racial inequality prompted thousands of students to join the movement.

The Occupy Cal students were joined by hundreds of Occupy Oakland demonstrators who marched the five miles from Oakland to Berkeley along Telegraph Avenue, chanting, "Here comes Oakland!" Police cleared their tent city outside Oakland City Hall on Monday amid complaints about safety and sanitation, and arrested more than 50 people.

Occupy Cal's general assembly voted in favor of inviting the university's chancellor and board of regents to a debate in early December and sending the educational officials a list of demands, including a tuition rollback to 2009 levels.

Lt. Gov. Gavin Newsom on Tuesday called on members of the California State University board of trustees, meeting in Long Beach on Wednesday, to forego its proposed tuition hike of 9 percent next fall unless the state increases funding to the 23-campus system.

"In today's economy, the timing of the proposed 9 percent tuition increase could not come at a more difficult time," Newsom said. "Families are struggling to make ends meet, and many who had hoped to afford higher education are rethinking whether college is a realistic option."

Earlier in the day, university officials said a female staff member reported seeing a man with a gun, who was shot by a university police officer within minutes. The condition of the 33-year-old suspect was not immediately known. His name was not released.

Dong Hwan Kim, 27, a senior, said he was terrified when he learned of the shooting.

"The shooting, in addition to what's happening here with the protests, makes the campus feel really tense," Kim said. "This is a historical moment, but it is also really scary at the same time."

Protesters descended on the university after ReFund California, a coalition of student groups and university employee unions, called for a campus strike and teach-ins.

"If the only people who can come here in the future are those who have money, it's going to hurt everyone's educational experience," said Daniel Rodriguez, 28, a graduate student who was conducting an introductory Spanish language class outside.

Occupy Cal activists said they would try again to establish an encampment Tuesday night after the Reich speech.

On Nov. 9, baton-wielding police clashed with protesters who tried to set up tents and arrested 40 people as the university sought to uphold a campus ban on camping.

UC Berkeley Chancellor Robert Birgeneau launched an investigation into allegations that campus police used excessive force. He said videos of the protests were disturbing, and he plans to grant amnesty to all students who were arrested and cited for attempting to block police from removing the tents.

Oscar Varela, 21, a fifth-year economics major who helped organize Tuesday's demonstrations, was among the students who tried to block campus police from tearing down the campus encampment.

"We want to stay here to prove to the regents and state that we are part of this movement and that we want our tuition to go back to what it used to be, which essentially should be free," Varela said.

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Associated Press writer Garance Burke contributed to this report.