An unknown male called the Leland High School office around 9:20 a.m. and said there was a bomb on campus, police Officer Jermaine Thomas said.
The voice was muffled and administrators could not tell if it was an adult or teenager calling, he said.
Students were evacuated to a school field, and police arrived to search the campus at 6677 Camden Ave.
After about an hour, police determined the campus was safe and students were called back around 10:30 a.m., Thomas said.
Bomb threats to school campuses are infrequent, Thomas said, and said the most recent he could recall occurred on a campus toward the beginning of the academic year.
