( CNN ) -- Adam Mayes -- accused of murder and kidnapping in a case involving a Tennessee mother and her three daughters -- has died , FBI spokesman Joel Siskovic said late Thursday . The two sisters he allegedly kidnapped were found alive , law enforcement sources said . There had been conflicting reports about whether Mayes was dead or alive after he reportedly shot himself in Union County , Mississippi . Daniel McMullen , FBI special agent in charge in Jackson , Mississippi , said that officers with the Mississippi Highway Safety Patrol and state Department of Fisheries , Wildlife and Parks rescued Alexandria and Kyliyah Bain , `` alive and unharmed . '' `` Preliminary reports indicate that Mr. Mayes shot himself in the head and was later pronounced dead , '' McMullen told reporters . The two surviving sisters `` are suffering from the experience of being out in the woods and from being kidnapped . They are suffering from dehydration and exhaustion , but appear OK , '' a federal law enforcement source on the scene told CNN . Mayes , 35 , was suspected of abducting Alexandria , 12 , and Kyliyah , 8 , from their Whiteville , Tennessee , home , in late April , and killing Jo Ann Bain and her eldest daughter , Adrienne , 14 . The FBI on Wednesday put Adam Mayes on its list of 10 most wanted fugitives . The reward for information leading to Mayes ' arrest stood at $ 175,000 on Thursday . Authorities responded Thursday evening after someone called to report what they believed may have been Mayes ' vehicle , a law enforcement source close to the investigation said . A task force was nearby and as they approached , Mayes stood up and shot himself in the head , the source said . The two girls were not near him at the time . Mayes and his wife , Teresa Mayes , had been charged with two counts of first-degree murder and two counts of especially aggravated kidnapping . He faced an additional count of making a false report , according to arrest affidavits filed in Tennessee . Adam Mayes ' mother-in-law told HLN 's Nancy Grace on Thursday that he may have believed he was the father of the two young girls he was accused of abducting . `` He believes they are his children , '' Josie Tate told Grace . Tate , who lives in Chatsworth , Georgia , tearfully pleaded for Mayes to return Alexandria and Kyliyah Bain and turn himself in . `` You 've had a chance to live life . They have n't , '' Tate said . `` Give them that chance . '' Police said Teresa Mayes told them she was in the Bains ' garage when Adam Mayes killed Jo Ann and Adrienne Bain . Teresa Mayes ' lawyer , Shana Johnson , said Thursday that her client last saw Mayes and the Bain girls in Mississippi on April 27 . The Mayes family and the Bain family are connected through Adam Mayes ' sister Pamela , who used to be married to Jo Ann 's husband , Gary Bain , the lawyer said . Johnson told HLN she was `` happy '' and `` relieved '' the girls had been found alive . In affidavits , investigators said the Mayeses drove the bodies of Jo Ann and Adrienne Bain to Union County in northern Mississippi , where they were discovered Saturday in a shallow grave behind the house of Adam Mayes ' mother in Guntown , Mississippi . Adam Mayes ' mother , Mary Frances Mayes , has been charged with four counts of conspiracy to commit especially aggravated kidnapping . Adam Mayes was last seen May 1 in Guntown . While the search was centered around his hometown , he also had connections to Arizona , Texas , Florida and the Carolinas , the FBI said . Bobbi Booth , Mayes ' sister-in-law , told CNN 's Anderson Cooper on Thursday night that she 's `` overwhelmed right now . '' `` All I 'm ( thinking ) about now is that the children are safe , '' said Booth . `` Thank you , God , for letting those children come home . '' Booth described Adam Mayes as `` aggressive , abusive , crazy obviously . '' But Booth said she never had an inkling Mayes would be accused of kidnapping and murder . `` I never dreamed that he would do this , '' she said . CNN 's Rich Phillips and Joe Sutton , and HLN 's Natisha Lance , Mike Brooks and Josey Crews contributed to this report .
Reports indicate Adam Mayes shot himself in head , FBI says . Two abducted sisters were found alive in Mississippi . Adam and wife Teresa Mayes were charged with kidnapping and murder .