CHICAGO (CBS) — A 16-year-old Belvidere North High School student has died after being pulled from a pond where he was cooling off after a run on Tuesday.

The boy was on the high school track team, according to authorities. He was running with a friend, when he decided to jump into Blue Pond near Spencer Park to cool off.

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Dan Kane, executive director of the Boone County Conservation District said the two were in the pond together, and the victim went under and never surfaced. His friend was on a fishing pier screaming and crying.

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“We do not have the resources to have lifeguards, which is why it’s posted – no swimming and no boating. This is exactly what we are trying to avoid,” Kane said.

The boy was found by a fire department diver after about 30 minutes in 20 feet of water. He was taken to a hospital in Belvidere and later transferred to a hospital in Rockford, where he was pronounced dead.

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The coroner said the cause of death was drowning.