(STMW) — Authorities are investigating after a “MacGyver bomb” exploded Friday morning in the parking lot of an elementary school in west suburban West Chicago.

The DuPage County sheriff’s office was called about 10:30 a.m. after a plastic bottle exploded in the parking lot of Indian Knoll Elementary School, according to a statement from the sheriff’s office.

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Deputies arrived and determined the bottle was used as a “chemical reaction device commonly known as a MacGyver bomb,” the sheriff’s office said. They searched the school and grounds as a precautionary measure, but no other devices were found.

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No injuries were reported, according to the sheriff’s office. Deputies will remain at the school while detectives continue investigating.

Anyone with information should call the sheriff’s office at (630) 407-2400.

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(Source: Sun-Times Media Wire © Chicago Sun-Times 2015. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)