NEW YORK ( CNN ) -- Police in Connecticut say they have arrested a woman suspected of robbing at least six banks in the past week . Police released photos of a suspect in the robberies of six New England banks . Detectives from the Major Crimes division of the Connecticut State Police took Heather Brown into custody at about 3:15 p.m . The 34-year-old resident of Norwich , Connecticut , will be formally charged with robbery in the first degree , police said . Investigators believe Brown robbed the banks , often while claiming to have a bomb . `` When she goes into the banks , she gives the teller information through a note or verbally that she has a bomb , '' said Sgt . Jim Keeney of the Connecticut State Police . `` However , there have n't been any reports of an actual bomb . '' Authorities say they believe the woman has held up banks in the Connecticut towns of Middletown , Montville , East Hartford and Windsor , as well as banks in West Springfield , Massachusetts and Westerly , Rhode Island . Women commit 6.2 percent of bank robberies nationwide , up from 4.9 percent in 2002 , according to recent FBI figures . The one-woman crime wave in New England apparently began September 21 at the Citizens Bank in Montville , Connecticut . State police said `` a lone white female ... entered the bank with a bag in her possession . The suspect approached the teller indicated she was in possession of a bomb and demanded cash . '' The woman left the bag on a counter and bolted , police said . Four days later , a woman entered a branch of the New Alliance Bank in East Hartford , Connecticut . Investigators with the East Hartford Police Department said she `` left a note indicating that she had a bomb and demanded $ 1,000 . She fled the bank with an undisclosed amount of money . '' Police suspect she struck again the next day in Windsor , Connecticut .
Police say they have Brown , the past week , in custody . Investigators say she held up six banks in 34 . She informs teller she has a bomb , but no actual bomb has been seen , police say . Police : Suspect lives in Connecticut , Connecticut , has served time for bank robbery .