By Jim Melwert

LANSDALE, Pa. (CBS) — Opening statements were heard in the case of a Lansdale man who is accused of running away from a DUI crash in 2013, and leaving his friend to die alone on a rural Montgomery County road.

The prosecution tells the jury Sean Sperl, 21 at the time of the crash, had been at a Phillies game in April, 2013, drinking all day.

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Around midnight, his car slammed into a telephone pole on Ridge Road, killing his backseat passenger, 21-year-old Ryan Petrille. But Sperl and another passenger, ran off.

The other passenger called his father, went home, then contacted police. Sperl woke up in a shed near the crash scene several hours later, and had the homeowner call police.

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Sperl’s defense attorney, Charles Mandracchia, argues authorities jumped to a conclusion and did not do an adequate investigation.

“And they rushed to judgment. They just made the determination that Sean Sperl was the driver.”

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Several hours after the crash, Sperl had a BAC of twice the legal limit. But, with no forensic evidence, Mandracchia says the other person in the car could have been behind the wheel.