Examiner 's Office has reported to our agents that the preliminary assessment of the cause and manner of death for all five individuals was asphyxiation , suffocation and strangulation , '' the affidavit said . `` It was also reported that each body had ligature marks around the neck . The ligature marks were also observed by OSBI crime scene investigators . '' A spokeswoman for the state medical examiner 's office told CNN on Wednesday that the cause of death for Summer Rust and Teagin was strangulation , and that a ligature -- which could include a string , cord or wire -- was used to strangle them . Autopsies on the three girls were being conducted Wednesday , the spokeswoman said . A woman told police Durcho came to her apartment Monday afternoon and told her he had `` choked '' Summer Rust to death and that he was leaving Oklahoma , according to the affidavit . The woman asked Durcho about Rust 's children , the affidavit said , and `` Durcho told her that the children were at their grandmother 's residence ... while he and Summer worked out their relationship problems . '' The woman
-LRB- CNN -RRB- -- A man suspected in the slayings of his girlfriend and her four children admitted choking the Oklahoma woman to death , but said the children were not present at the time , according to an affidavit filed in the case . Joshua Steven Durcho was arrested Tuesday after a car chase with police . Joshua Steven Durcho , 25 , was arrested Tuesday night in Hamilton County , Texas , officials said . He is suspected of killing Summer Rust , 25 ; her son Teagin , 4 ; and daughters Evynn , 3 , and Autumn and Kirsten , both 7 . All five bodies were found in Rust 's apartment in El Reno , Oklahoma , about 30 miles west of Oklahoma City , on Monday . Durcho 's first cousin notified authorities he found the body of Rust , who is identified in the affidavit as Summer Dawn Garas . Police also found the children 's bodies in the apartment , according to the affidavit , written by a special agent with the Oklahoma State Bureau of Investigation and filed Tuesday in Canadian County , Oklahoma , District Court . `` The Medical