A Douglas County high school student was arrested after writing a bomb threat on a bathroom wall, police said Tuesday.

The March 30 incident is the second bathroom bomb threat Chapel Hill High School faced this year.

The school was also evacuated Jan. 26 as a precaution when a similar threat was discovered.

"At no time did I feel our students were in danger," Principal Dr. Sean Kelly wrote in a January statement.

Douglas County fire, sheriff's office, traffic division and K-9 officials responded after 1 p.m. alert by school staff, Lt. Glenn Daniel wrote in a Facebook post.

Acting on this threat, the school was immediately evacuated as a precautionary measure, Daniel said.

Lt. Billy Lashley with K-9 Milo and other agencies searched the building for explosives without finding any devices.

During the investigation, a student suspect confessed to writing the threat on the bathroom wall.

Brittney Nicole Boehne was taken into custody March 30 and charged with a felony for making terroristic threats and a misdemeanor count of disruption of public schools.