A second bomb threat hoax in three weeks at Greenfield Middle School was discovered in a classroom on Monday.

A student confessed to leaving the threat and is now in detention, according to Greenfield Exempted Village School District Superintendent Joe Wills. He said the note was left on a wall in a classroom.

As with the previous threat on Oct. 3, the middle school, elementary school and high school were evacuated, with all students directed to gather at the McClain football field.

According to Wills, the threat was reported by another student around 2 p.m. Emergency personnel were contacted and students were evacuated from the buildings. Wills said the buildings were cleared of any threat within an hour.

A student admitted to leaving the bomb threat and admitted it was a hoax, said Wills. That student has been taken into custody by law enforcement, Wills said, and transported to detention.

The juvnile will be, “charged to the extent of the law,” Wills said.

Monday’s was the third reported bomb threat in Highland County schools this school year, with the first happening at the Hillsboro City Schools in late September. Hillsboro City Schools had at least five similar threats last spring.

With the Oct. 3 bomb threat hoax in Greenfield, a 14-year-old male student admitted that afternoon to leaving the threat written on a bathroom wall at the high school. As previously reported, he said that he never intended to place an actual bomb anywhere and he said he was sorry. He said he just wanted a few days out of school. The threat stated that the school would be bombed on Oct. 4 or 5.

Last week the 14-year-old admitted to inducing panic, a charge that is typically a misdemeanor offense, but because the threat occurred at a school the charge is elevated to a second-degree felony. He had been in detention since his arrest on Oct. 3, and after admitting his responsibility last week he was ordered to attend treatment at a Miami Valley facility. He also has a suspended commitment to the Department of Youth Services (DYS), which is the prison system for youth.

Wills said the student responsible for Monday’s bomb threat will be disciplined appropriately and that the school district is working with law enforcement authorities to determine what charges should be filed.

Reach Angela Shepherd at 937-393-3456, ext. 1681, or on Twitter @wordyshepherd.