GLENDORA (CBSLA.com) — Authorities were investigating the discovery Monday of three vehicles located off a canyon road in Glendora.

The incident unfolded about 4:55 p.m. off Glendora Mountain Road, authorities said.

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Sky 2’s Stu Mundel reports he was told by a sheriff’s helicopter the three cars were apparently abandoned.

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“There are no victims inside those vehicles. They were notified about those cars earlier this afternoon,” Mundel said.

Firefighters and deputies have responded to the scene.

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An investigation is ongoing.