JENKS, Oklahoma - The Jenks High School's music building was evacuated Thursday morning. Jenks Public Schools police, Jenks Police and Tulsa Police Officers investigated after a suspicious bag was found.

The bag was later identified as a battery pack or charging device for a wireless phone or tablet, according to Rob Loeber, director of communications for Jenks Schools.

"The person who left the battery pack in the music building is being questioned by police, but no charges have been filed."

Loeber said a suspicious person was seen at the west door of the music building leaving an object close to the door. Jenks Police say the man was detained for questioning, and misdemeanor charges may be filed.

The school system sent out an "all clear" message just before noon. They said all students and staff were safe, and TPD said there is no threat at the music building.

Loeber said the building on the west side of the high school campus was cleared as a precaution. The rest of the Jenks High School campus continued to operate as usual, according to JPS.

Jenks Police blocked off North Birch Street in front of the building.