( CNN ) -- A Florida mother has been arrested for her alleged part in attempting to sell her 8-week-old son , police said Tuesday . Stephanie Bigbee Fleming , 22 , is the third person charged in the case . Her mother , Patty Bigbee , 45 , and her mother 's boyfriend , Lawrence Works , 42 , were arrested and charged last week . Fleming was already incarcerated on unrelated charges . Bigbee is accused of having approached a potential buyer in late October , offering to sell the infant for $ 75,000 , the Florida Department of Law Enforcement ( FDLE ) said in a statement . The would-be buyer then contacted authorities . Together , they negotiated the price of the baby down to $ 30,000 and agreed to meet , the statement said . Bigbee and her boyfriend arranged the sale for last Friday , at which point officers swept in . `` They were in contact , '' said FDLE spokesman Keith Kameg about the mother and daughter . `` And according to our investigation , they discussed the sale of the child . The birth mother was told by her mother that the sale price was $ 10,000 . '' Police say Fleming had agreed to receive $ 9,000 from the sale and that she planned to buy a new vehicle with the money . The infant is currently in the custody of the Florida Department of Children and Families . Fleming 's bond was set at $ 50,000 , while Bigbee 's was put at $ 100,000 . Works is being held on a $ 50,000 bond .
Stephanie Ann Fleming , 22 , was already incarcerated on unrelated charges . She pleaded with her mother to release the infant , police said . The infant was in the custody of the California Department of Children and Families .