Update, 3:30 p.m.:
SFPD says that, after a thorough search of the culinary school by the bomb squad, there was no device or package located.
Original story, 12:30 p.m.:
A culinary school near San Francisco's United Nations Plaza was evacuated this 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.
Fire spokeswoman Mindy Talmadge said that a note was discovered on the sixth floor of the school, which is having midterm exams.
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.
As of about 11:40 a.m., no bomb had been located.