“Jackass” star Steve-O was arrested in Canada yesterday (Mar. 27) for an incident that took place 8 years ago.

According to TMZ, Steve-O was stopped by customs when he got off an airplane at Calgary International Airport … when officials noticed there was an outstanding warrant out for his arrest.

We’re told the warrant was issued back in 2003 — for an incident in which Steve-O allegedly attacked somebody with an unknown object. So far, the identity of the victim is unclear.

Steve-O was placed behind bars for a short while — before going in front of a judge. He was eventually released on $10,000 Canadian ($10,216.60 U.S.) bail … which the actor had to pay IN CASH.

Steve-O is due back in court in May.

We guess he didn’t see that one coming……

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