Chickamauga man tells police elderly mother killed, dismembered teens

JOHNSON CITY, TENNESSEE - A man charged in the grisly slayings of two Georgia teenagers says his elderly mother did it. <br> <br> A police officer testified Monday that 51-year-old Howard Hawk Willis of Chickamauga told him it must have been his mother, Betty, who killed the teens. <br> <br> Washington County Sheriff&#39;s Department Sergeant Kenneth Phillips was testifying at a preliminary hearing for Betty Willis. <br> <br> She faces two counts of abuse of a corpse, accessory after the fact to first-degree murder and solicitation to tamper with evidence. <br> <br> The son is charged with murdering 17-year-old Adam Chrismer and his wife of two months, 16-year-old Samantha Foster Leming. <br> <br> The teens were last seen traveling with Willis. <br> <br> Chrismer&#39;s head and hands were found in a lake at Johnson City. His other remains and those of his wife were recovered in a storage warehouse.