GREENVILLE -- School district officials say Greenville Middle School is no longer under "lock-out" mode after receiving a threat, and a student has been identified as the suspect.

"An unidentified male called the Greenville Middle School and made a non-specific threat to the campus. The phone call was immediately reported to the Greenville Police Department and student resource officers were dispatched to the campus," Chief Communications and Business Development Officer Kelli Tharp said.

The call came in at about 9 a.m. Monday. Middle school students were taken inside under "lock-out" mode, which means they are still allowed to switch classes and move around inside the building, but no one is allowed to enter or leave the campus.

Other Greenville ISD campuses were placed on "lock-out" mode when the call came in, but the order has since been lifted.

Tharp said the lock-out at the middle school was lifted just before 2 p.m.

"The caller who made the threats against GMS has been identified as a student and will be prosecuted in accordance with the law and the GISD Student Code of Conduct," she said.

The student who made the call has not been identified.