22 year old Torrell Wayne Tillman of Bayou Vista has been arrested by the St. Mary Parish Sheriff's office and charged with armed robbery.  It's alleged that Tillman entered a Teche Federal Bank on Southeast Boulevard in Bayou Vista this past Saturday, claimed to have an explosive device and demanded money.  With approximately $2,400 in cash Tillman allegedly fled on foot.  Detectives determined that Tillman was a 'person of interest' and secured a warrant for his arrest.  Tillman was arrested last night at his home on Saturn Road in Bayou Vista and transported to the St. Mary Parish jail where he is awaiting a bail hearing.