MADRID, Spain -- Spanish police say they have arrested more than 50 students during a protest at a Madrid university during the first day of a strike to protest a government education reform and cutbacks in grants and staffing.

A police spokeswoman said the arrests occurred as police moved in to end the occupation of a campus building after Complutense University had asked them to intervene.

She spoke on condition of anonymity because she wasn't authorized to give her name for use as a police spokeswoman.

Students, many with their faces covered, set fire to trash containers and set up barricades on at least two streets in the university complex during the protest.

There were no reports of clashes or injuries.