A man who set fire to the Salvation Army Thrift Store in St. John's last year is heading to prison.

Justin Murphy, 27, was sentenced to two and a half years in prison on Thursday.

Judge James Walsh handed down the decision based on the seriousness of the fire and the man's lengthy criminal record.

Murphy is intellectually impaired, and has drug and alcohol problems.

He set fire to clothing and other items outside the thrift store on Kenmount Road July 4.

The act was caught on a security video, which showed a man in a hoodie rummaging through second-hand items that had been dropped off after-hours.

The store was closed for about a month last year because of the fire damage.