By CBS13 Staff

OAKDALE (CBS13) — An 18-year-old senior at Oakdale High School has been identified as the person who died after falling out of a moving truck over the weekend, authorities say.

The incident happened just before midnight Saturday along the 200 block of N. Oak Avenue.

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Oakdale police say officers responded after a report of a person falling out of a moving truck. Officers immediately started life-saving efforts on the victim, but medics soon pronounced him dead at the scene.

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Officers believe the man had fallen after hanging out of the passenger-side window of the truck. Five other people were inside the truck, with police saying all of them were juveniles.

On Monday, police identified the person killed as 18-year-old Oakdale resident Joseph Casas. He was a senior at Oakdale High School, police say, and grief counselors will be on hand when students return after winter break.

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Neither alcohol nor the vehicle’s speed were factors in the accident, police say.