Folsom Police arrested four people for conspiracy and robbery after using a replica handgun to rob a victim while he was using a local ATM. Michelle Tarpley, 18, of Rancho Cordova, Seth Briggs, 20 years-old of North Highlands, Guillermo Santana, 27 years-old of Sacramento, and Steven Tamberg, 23 years-old of Rancho Cordova, were all arrested for suspicion of robbery and conspiracy to commit robbery.