Students at North Hall Middle School have returned to school after evacuating for a bomb threat.

Students at the middle school were moved to North Hall High School while emergency officials made sure the middle school was safe.

“At approximately 2 p.m. today the senior administration received a bomb threat at the school and per our protocol the students were evacuated,” said Gordon Higgins, a spokesman for the school district, said earlier this afternoon. “The students were evacuated to North Hall High School where they will remain until (emergency personnel) can give them the all clear to return.”

School officials were alerted to a note in the middle school bathroom, according to Hall County Sheriff’s Office spokeswoman Deputy Nicole Bailes.

The school alert system notified parents of the lockdown, Bailes wrote in an email.

“A Hall County bomb detection K-9 was brought in to sweep through the school to detect any threats,” Bailes wrote.

There is a $1,000 reward for information that leads to the identification of the person who made the threat, Higgins said.