SAN JOSE (CBS SF) — A man has been found dead inside a car that was discovered partially submerged in a San Jose pond, authorities said.

San Jose police said officers responded to a report of a car that drove into a pond near Berryessa Road and Morrill Avenue around 7:30 a.m.

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Police said the van plowed through the metal gates outside the percolation pond before plunging into the water below.

Arriving officers found a man who was pronounced dead at the scene, according to police.

“A female sergeant jumped in and retrieved the body, but there was nothing they could do,” said San Jose Police Sgt. Enrique Garcia. “Paramedics pronounced the person dead.”

A dive team from the Santa Clara County Sheriff’s Office was sent out to search for any other victims at the bottom of the pond.

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Investigators say they don’t know why the van and driver ended up the pond in the first place or how exactly he died.

“There’s obviously a lot of factors that could have caused the person’s death,” said Garcia. “We don’t know if it was a suicide or a traffic collision or a medical condition.”

Investigators said they hope an autopsy will provide them with some of those answers.

In the meantime, they said it doesn’t appear the driver was the victim of a crime.

“Right now, there’s nothing suspicious to suggest that a crime was committed, at least from what officers could see on scene, said Garcia.

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Anyone with information on the incident is asked to call the Police Department’s traffic investigation unit at (408) 277-4654.