Updated

A New York City teenager has been convicted of four counts of manslaughter in the deaths of his friends in a high-speed car crash on a Long Island highway.

A Nassau County jury returned a partial verdict Friday against Joseph Beer, who has admitted smoking marijuana before the crash.

The jury deadlocked on the most serious count of aggravated vehicular manslaughter.

Besides manslaughter, the jury convicted the Queens teenager of reckless driving and reckless endangerment. He faces 5 to 15 years in prison on the manslaughter conviction.

Beer could have faced up to 25 years had he been convicted of the vehicular homicide count.

Beer was the only survivor of the crash on the Southern State Parkway in October 2012. Police say he was traveling more than 100 mph.