SAN FRANCISCO (CBS SF) — A culinary school near San Francisco’s United Nations Plaza was evacuated Wednesday afternoon because of a bomb threat, according to police.

Officers responded at 10:59 a.m. to the International Culinary School at The Art Institute of California, located at 1130 Market St., on reports of a bomb threat, police spokesman Officer Albie Esparza said.

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Fire spokeswoman Mindy Talmadge said that a note was discovered on the sixth floor of the school, which is having midterm exams.

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Bomb-sniffing dogs are being used to sweep the building and look for bombs and Market Street has been closed between Seventh and Eighth streets, Esparza said.

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As of about 11:40 a.m., no bomb had been located.