BOSTON (CBS) – A man who was injured in a brawl at a Boston parking garage says he and his friends could have been killed.

Jonathan Brisco has a black eye and six stitches after the vicious attack that happened early Sunday morning at the Transportation Building garage. Under advisement from lawyers, he could not say much, but his father is speaking out about the incident.

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“I’m thankful he’s alive,” says Jonathan’s father Gary.

He and two friends were brutally beaten by a mob and the video was posted on the website

“It was a vicious brutal attack, they were relentless, they were cowards and they kept beating them,” said Gary. “I don’t think they value life.”

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One of Jonathan’s friends suffered a broken arm, chipped tooth and a concussion. The third friend was also beaten.

The fight started over beeping horns in the parking lot gridlock. Gary says, “Someone beeped a horn, next thing you know they got 27 guys beating them and they’re in fear for their lives.”

The family hopes the video leads to arrests.

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“It’s horrifying, it’s shocking,” Gary says. “I haven’t been right since. I’m nauseous; my blood pressure is through the roof I’m sick to my stomach about it.”