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PORTLAND -- Police have arrested a wanted Portland State University student in Battle Ground, Washington, one day after school officials said they found body armor in his locker.

When 39-year-old Christopher Rantila failed to pay the bill for his school locker, staff members opened it and found the items, according to school spokesman Scott Gallagher.

PSU alerted students and staff Thursday morning that Rantila was wanted for questioning for the unlawful possession of body armor and firearms.

The case was turned over to the Portland Police Bureau before being handed to the Federal Bureau of Investigation in Vancouver.

KGW discovered Thursday that Rantila, who also goes by the name Christopher Kent, has a criminal record. In 2009 he was accused of trying to steal items from a Vancouver Walmart and pepper-spraying employees. He pleaded guilty to robbery in the second degree for that crime.

On Friday, Rantila was arrested by FBI agents in Battle Ground and charged with felon in possession of body armor, according to FBI spokeswoman Ayn Sandalo Dietrich.

He is scheduled to appear in Tacoma Federal Court Friday afternoon.

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