2 arrested in Olympia beating that was caught on camera

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OLYMPIA, Wash. — Two men are under investigation in a brass knuckles attack in Olympia on a witness in a robbery case.

According to court documents, an assailant used brass knuckles as he beat up a man in downtown Olympia last Friday.

Video posted on YouTube is a key piece of evidence in the case, showing punch after punch thrown at the man outside the Olympia Transit Center.

Olympia police said there was a second assailant involved before the camera started rolling.

Tony Harrison said he saw the fight.

"I was thinking it was crazy, you know, what has this world come to?" Harrison said.

The two attackers were arrested when the victim came forward, police said.  Soon after, a detective learned about the video posted on YouTube.

A detective managed to burn a copy of the YouTube video before it disappeared online.