( CNN ) -- Investigators released photographs Wednesday showing a man wanted in the case of a slain woman and her missing 7-year-old daughter . The Oklahoma State Bureau of Investigation released images taken by a security camera of 37-year-old Tonya Hobbs and her estranged husband , Lester Williams Hobbs , as they shopped for food just hours before Tonya Hobbs was killed . Police have charged Lester Hobbs with murder in his estranged wife 's death . They also have charged him with kidnapping Tonya Hobbs ' daughter , Aja Daniell Johnson , the bureau said Wednesday . `` These new pictures show the suspect car that is now missing as well as what the suspect , Lester Hobbs , looks like and the clothes he may be wearing now , '' a bureau spokeswoman , Jessica Brown , said in a statement . Investigators have asked anyone with information about Hobbs or Aja to call a new hotline number at 1-800-THE-LOST . The images released Wednesday were taken about 5:15 p.m. Saturday at a store in Lawton , Oklahoma . Shortly after that , the couple and Aja apparently went to the home of Lester Hobbs ' sister to eat , police said . Hobbs was found dead in a parked RV the next day in Geronimo , Oklahoma . Her daughter has been missing since then . `` We 've got to find that little girl , '' Special Agent Ray Homer of the Oklahoma State Bureau of Investigation said this week . The girl has a medical condition that requires medication , police have said , though they declined to elaborate . Lester Hobbs , 46 , and Aja are presumed to be in Hobbs ' car -- a white 1992 Toyota Paseo with an Oklahoma tag number 577-BPW , police said . Police have searched for them in Oklahoma and Texas . Lester and Tonya Hobbs were separated , but apparently Tonya Hobbs was visiting her estranged husband in an attempt to reconcile , Richard Goss , agent in charge of the state bureau of investigation 's Lawton , Oklahoma , office , told reporters this week . Lester Hobbs is not Aja 's biological father , police said . He has an extensive criminal history , Goss said , without elaborating . Aja 's biological father was awarded emergency custody of her in November , according to Oklahoma County District Court documents obtained by CNN affiliate KWTV of Oklahoma City . At a hearing , Tonya Hobbs -- identified as Tonya Dunkin in the documents -- and the girl 's father , John Johnson , agreed that she would have supervised visitation with Aja and keep the girl away from Lester Hobbs , the documents said .
Store security photo shows Lester and Tonya Hobbs before her death . The couple had been married for more than 20 years when they were found dead in their home on the morning of July 30, according to a police report obtained by PEOPLE. Girl , 7 , has been missing since her mother 's body was found . Sheriff 's Office said girl has a medical condition that requires medication .