Updated

Authorities in Pennsylvania say they arrested a "wolf pack" of teenagers in connection with an assault on a 13-year-old boy who police say was kidnapped and hung from a fence post.

Nadin Khoury, of Upper Darby, Pa., was walking home from school on Jan. 11 when he was attacked by a group of teenagers who punched, kicked and dragged him through the snow before stuffing him in a tree and hanging him by his coat on a 7-foot-high fence, police said.

The boy, who was not seriously injured, was rescued when a passerby jumped out of her car and took the boy home.

Authorities arrested six teenagers, ages 13 to 17, in connection with the attack on Monday. Police arrested a seventh teen on Tuesday after he arrived at school.

Some of the alleged assailants videotaped the attack, which lasted about 15 minutes, on a cell phone camera. Police have charged the suspects with kidnapping, false imprisonment, reckless endangerment and other crimes.

"They're lucky they didn't kill him," Police Superintendent Michael Chitwood said.

In an interview Tuesday with Fox News, Nadin said he was walking with a friend in broad daylight when the two were attacked.

"When I got down from off the tree, they caught me again and starting kicking me and punching me," Nadin said. "And they put me on the gate."

The boy also said that he's been told by his middle school not to return to class, and said his family was forced to move after they were allegedly threatened.

Rebecca Khoury, the boy's mother, said she was horrified upon viewing the video.

"I couldn't even believe what I was looking at," Khoury said in tears. "It was just horrible."

Authorities have not yet determined a motive.

Fox News' David Lee Miller and The Associated Press contributed to this report

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