DETROIT -- Videotaped footage of Friday night's brawl at The Palace of Auburn Hills showed that a fan in a white hat may have been responsible for the action that started the melee, Detroit station WDIV-TV reported over the weekend.

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VIDEO: Investigation Focuses On Fan In White Hat

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Who is this fan?

While Indiana's Ron Artest was sprawled on his back on a scorer's table, away from a scuffle on the court, a fan in a white hat apparently underhand lobbed a plastic cup of beer that hit Artest.

Artest jumped up and charged into the stands, throwing punches as he climbed over seats.

The man in the white hat stepped aside and another person took the initial blow, the station reported.

The tape then shows the man apparently attacking Artest from behind.

Friday night's fight resulted in the suspension of four players, including Artest, Stephen Jackson and Jermaine O'Neal of the Pacers and Ben Wallace of the Pistons.

The Oakland County prosecutor's office is now reviewing the case to determine if charges will be filed. The identity of the fan in the white hat remains unknown.