FREDERICK, Colo. (AP) — The bodies of two young girls were submerged in crude oil for four days before authorities discovered them, according to court documents filed by an attorney defending the girls' father against accusations that he killed his children and wife. The motion filed Friday by Christopher Watts' attorney, James Merson, also asked that DNA swabs be taken from the girls' necks. The request quotes an expert who believes the oil would not eliminate DNA and said samples can be obtained "after strangulation."