SANTA CRUZ (CBS13) — A Sutter County man has confessed to stealing a fire commander’s wallet while he fought the CZU Lightning Complex Fire, the Santa Cruz County Sheriff announced on Thursday.

Investigators arrested 37-year-old Live Oak resident Brian Lee Johnson on Wednesday night for the theft, Sheriff Jim Hart said. An anonymous tip phoned into the sheriff’s office helped lead detectives to Johnson.

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Johnson was on probation, so his residence was searched and merchandise believed to have been bought with stolen credit cards was seized.

According to a report from KPIX, Johnston expressed remorse for his actions when he was taken into custody.

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“He admitted that he had used the credit cards and made the charges,” said Sheriff Hart. “He also sat down and wrote a letter of apology to the fireman and he was then arrested for multiple felony charges.”

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Johnson is now facing multiple felony charges, including forgery, grand theft, credit card theft, possession of stolen property and a probation violation.

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Detectives are still following up on the possibility that another person was involved in the theft.