ORLANDO, Fla. -- Officials searching for bombs and munitions on Monday began investigating about 2,000 objects at a Central Florida middle school that was built on a World War II bombing range.

The Army Corps of Engineers started digging under and around Odyssey Middle School, taking advantage of students being off for the week of Thanksgiving.

Crews will search the school property from back to front, working to identify the 2,000 items that have been flagged. Officials said they believe that most of the flagged objects, which were located with a metal detector, are building materials, such as nails and wires.

Any munition that is found will be left in place and detonated at the end of week, Local 6 News reported.

"If a munition is under a paved area or under a building, first of all, there is no access to it, there is no way for anybody to access it and then there is no way for energy to be applied to it. By energy, I mean picking it up, moving it, dropping it, kicking it, touching it," an official said.

On Friday, two rockets and a rifle grenade were found on property adjacent to the school. Those items were detonated on Monday afternoon.

Watch Local 6 News for more on this story.