A man identified as a person of interest four years ago in the murder of Nicole Smith of Mendocino county has been arrested and is being held in connection with the armed robbery of a Cloverdale convenience store. Ramon Soto was identified through surveillance footage that show’s his vehicle at the Quickstop and then leaving directly after the robbery. A search of Soto’s residence turned up evidence that connected him to the robbery. Soto remains in a Sonoma County jail with various charges against him.