( CNN ) -- A friend of an elderly Arkansas couple has been charged with forcing the wife to try to rob a bank with a fake explosive device , police said Thursday . Authorities in Fayetteville arrested 60-year-old Paul Bradley on Thursday , three days after 73-year-old Betty Davis walked into a bank there and told a teller she had a bomb fastened to her ankle . Her husband , Dean Davis , said he has known Bradley for some time . `` I had coffee with him all last week , '' said Davis , whom police said had been tied up in the couple 's home while his wife was forced to go to the bank by a masked assailant . `` One morning he paid for my coffee , and I 'd like to see him and pay him that back . '' Bradley has been charged with aggravated burglary , theft of property , aggravated robbery and kidnapping , Washington County Sheriff Tim Helder told reporters . He said Bradley strapped the phony bomb onto Betty Davis and took her to the bank to force her to withdraw money from her account . Once inside , she told a teller about the plot and that she had been followed to the Arvest Bank branch . `` I felt like I needed to get out of that bank and get everyone out of danger , '' Betty Davis said . `` If he did what he said he was going to do , he would blow it up and hurt all those people . '' After Betty Davis talked to police , they went to the couple 's home and found Dean Davis tied up , police said . The assailant wore a mask and said little , so the couple was unable to identify their attacker at first . `` I would have never imagined that of him and never thought he would do something like that , '' Dean Davis said . Helder said that authorities `` could n't have had better victims than the Davises . '' `` They were very calm and collected , and she helped us identify the vehicle , '' he said . The FBI assisted in the investigation , Fayetteville police spokesman Sgt . Craig Stout said . Police expect to bring additional charges against Bradley , including extortion , he said . In March 2011 Bradley received a suspended sentence for his involvement in a scheme to defraud local residents of thousands of dollars , Helder said .
Police say Paul Bradley forced a friend 's wife to attempt a bank robbery . `` I had coffee with him all last week , '' her husband said . The woman told tellers she had a bomb strapped to her ankle when she went in . Their assailant wore a mask and said little , so they were unable to identify their attacker at first .