The Portland car parts and accessories store has been closed, leaving Rockauto, the parent company, without a single store.

The news was first reported by the Oregonian newspaper, which cited a person familiar with the situation.

Rockauto did not respond to request for comment on Thursday.

The Oregonian reported that Rockauto was the only remaining Rockauto store in the region, which has a population of about 20,000.

Rockauto has about 10,000 employees.

Portland police have arrested three people in connection with the investigation.

Investigators said one person has been charged with conspiracy to commit arson, one person was charged with aggravated assault, and one person is charged with two counts of criminal mischief.

This is a developing story.