Sandra and Elizabeth Andersen filled the family bathtub with water and took Linda Andersen to the bathroom. Linda had difficulty getting into the bathtub, because of the mixture of vodka and pills she had been given. After putting gloves on, Sandra and Elizabeth gave their mother a massage. Within minutes, according to police reports, Sandra Andersen instructed her mother to lay on her stomach so that she could scrub her back. Sandra Andersen instantly pulled her mother's head down and did not let go. After four minutes, Sandra Andersen released her mother's head and found Linda Andersen to be dead. After having killed their mother, Sandra and Elizabeth Andersen went with their friends to a nearby restaurant where they celebrated their victory. Later that night, Sandra and Elizabeth Andersen called 9-1-1 and informed them that they had found their mother laying in the bathtub. 