(AP) PHILADELPHIA A judge threw out a manslaughter charge against a man who fatally stabbed a teenager who allegedly attacked him because he is gay.

Lucas Dawson, 21, was walking from his home in the city's East Mount Airy neighborhood on Oct. 29 to catch a bus downtown, where he planned to meet with friends to discuss his audition for “American Idol” the day before.

Dawson pulled out a small knife and waved it at the teens. After Knight punched him, Dawson said he stabbed him in the chest; Knight died within an hour.

Because Dawson tried to retreat and because there were a number of attackers, Kosinski said criminal charges were not warranted. He ordered that Dawson, who had been jailed, be released.

Assistant District Attorney MK Feeney praised Dawson for turning himself in to police, who had no suspect in the case. But she argued that a jury should decide whether Dawson's actions were self-defense.

Knight was stabbed more than once, she said, but Dawson required no medical care for his injuries from the beating. Feeney said her office would review the judge's decision and decide whether to appeal.

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