OAKLAND (CBS SF) — A person who reportedly took a selfie on BART tracks Monday night caused systemwide delays.

According to the Contra Costa Times, BART trains were delayed for approximately 30 minutes after a rider laid down on the tracks at an Oakland station.

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A family member of the rider contacted police who were able to trace his cell phone, but showed he was no longer within the BART system.

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If he’s located, police said they’ll pursue criminal prosecution for interfering with railroad activity.

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