LUBBOCK, Texas (AP) — Police in Texas say they have executed search warrants at the local office of the state child protection agency and a supervisor's home and car following the death of a 22-month-old girl whose mother claimed her military husband's deployment overseas left her too stressed to care for their three children.Abilene police Chief Stan Standridge said in an emailed statement Tuesday that the department had probable cause to suggest documents and other evidence existed to support allegations of evidence tampering.Standridge says police began a rare investigation of Child Protective Services after "a refusal of certain CPS supervisors to cooperate" with officers looking into the death of Tamryn Klapheke.No arrests have been made.Tiffany Nicole Klapheke, who moved to Texas a couple of years ago from the Lexington, Ky., area, remains jailed in connection with her daughter's death.